ASUR 3Q12 Passenger Traffic Up 10.18% YoY

                  ASUR 3Q12 Passenger Traffic Up 10.18% YoY

PR Newswire

MEXICO CITY, Oct. 23, 2012

MEXICO CITY, Oct. 23, 2012 /PRNewswire/ --Grupo Aeroportuario del Sureste,
S.A.B. de C.V. (NYSE: ASR; BMV: ASUR), (ASUR)  the first privatized airport
group in Mexico and operator of Cancun Airport and eight other airports in
southeast Mexico, today announced results for the three and nine-month periods
ended September 30, 2012.

3Q12 Highlights^1:

  oEBITDA^2 increased by 17.81% to Ps.691.80 million
  oTotal passenger traffic was up 10.18%
  oTotal revenues rose by 16.50% due to increases of 14.27% in aeronautical
    revenues, 14.52% in non-aeronautical revenues, and 35.21% in construction
    services revenues
  oCommercial revenues per passenger increased by 5.30% to Ps.67.81
  oOperating profit increased by 20.44%
  oEBITDA margin increased to 56.61% from 55.98% in 3Q11

1. Unless otherwise stated, all financial figures discussed in this
announcement are unaudited, prepared in accordance with International
Financial Reporting Standards (IFRS) and represent comparisons between the
three- and nine-month periods ended September 30, 2012, and the equivalent
three- and nine-month periods ended September 30, 2011. Financial figures for
the three- and nine-month periods ended September 30, 2011 have been restated
to reflect IFRS. Results are expressed in nominal pesos. Tables state figures
in thousands of pesos, unless otherwise noted. Passenger figures exclude
transit and general aviation passengers. Commercial revenues include revenues
from non-permanent ground transportation and parking lots. All U.S. dollar
figures are calculated at the exchange rate of US$1.00 = Ps.12.8695.

2. EBITDA means net income before: provision for taxes, deferred taxes,
profit sharing, non-ordinary items, comprehensive financing cost and
depreciation and amortization. EBITDA should not be considered as an
alternative to net income, as an indicator of our operating performance or as
an alternative to cash flow as an indicator of liquidity. Our management
believes that EBITDA provides a useful measure of our performance that is
widely used by investors and analysts to evaluate our performance and compare
it with other companies. EBITDA is not defined under U.S. GAAP or IFRS and may
be calculated differently by different companies.

Passenger Traffic

For the third quarter of 2012, total passenger traffic increased
year-over-year by 10.18%. Domestic passenger traffic increased by 17.21% while
international passenger traffic rose by 3.49%.

The 17.21% growth in domestic passenger traffic growth was driven by increases
at Cancun, Cozumel, Minatitlan, Oaxaca, Villahermosa and Oaxaca. The 3.49%
growth in international passenger traffic resulted mainly from an increase of
3.32% in international traffic at the Cancun airport.

Passenger traffic for the nine-month period ended September 30, 2012 increased
9.31% compared to the same period last year, reflecting increases of 17.14% in
domestic passenger traffic and 3.86% in international passenger traffic.

Table I: Domestic Passengers (in thousands)

                                      9M      9M
Airport      3Q11    3Q12    % Change 2011            % Change
                                              2012
Cancun       1,114.5 1,434.6 28.72    2,738.8 3,466.5 26.57
Cozumel      21.4    27.2    27.10    41.1    68.9    67.64
Huatulco     112.8   110.6   (1.95)   290.8   304.1   4.57
Merida       288.0   284.3   (1.28)   819.6   838.2   2.27
Minatitlan   24.5    31.9    30.20    75.0    93.3    24.40
Oaxaca       98.1    114.3   16.51    249.9   310.8   24.37
Tapachula    37.8    36.3    (3.97)   114.9   110.3   (4.00)
Veracruz     203.2   208.5   2.61     576.6   575.5   (0.19)
Villahermosa 213.2   229.5   7.65     578.8   658.3   13.74
TOTAL        2,113.5 2,477.2 17.21    5,485.5 6,425.9 17.14

Note:  Passenger figures exclude transit and general aviation passengers.

II: International Passengers (in thousands)

                                      9M      9M
Airport      3Q11    3Q12    % Change 2011            % Change
                                              2012
Cancun       2,068.2 2,136.8 3.32     7,288.4 7,575.9 3.94
Cozumel      64.1    66.7    4.06     310.5   303.1   (2.38)
Huatulco     3.7     4.7     27.03    52.3    53.5    2.29
Merida       22.9    26.5    15.72    70.4    76.6    8.81
Minatitlan   1.3     1.6     23.08    3.4     4.5     32.35
Oaxaca       13.5    14.2    5.19     37.3    40.6    8.85
Tapachula    1.6     1.8     12.50    5.7     5.8     1.75
Veracruz     30.2    28.3    (6.29)   71.6    77.3    7.96
Villahermosa 14.7    17.0    15.65    37.4    43.6    16.58
TOTAL        2,220.2 2,297.6 3.49     7,877.0 8,190.9 3.86

Note:  Passenger figures exclude transit and general aviation passengers.

Table III: Total Passengers (in thousands)

                                      9M       9M
Airport      3Q11    3Q12    % Change 2011              % Change
                                               2012
Cancun       3,182.7 3,571.4 12.21    10,027.2 11,042.4 10.12
Cozumel      85.5    93.9    9.82     351.6    372.0    5.80
Huatulco     116.5   115.3   (1.03)   343.1    357.6    4.23
Merida       310.9   310.8   (0.03)   890.0    914.8    2.79
Minatitlan   25.8    33.5    29.84    78.4     97.8     24.74
Oaxaca       111.6   128.5   15.14    287.2    351.4    22.35
Tapachula    39.4    38.1    (3.30)   120.6    116.1    (3.73)
Veracruz     233.4   236.8   1.46     648.2    652.8    0.71
Villahermosa 227.9   246.5   8.16     616.2    701.9    13.91
TOTAL        4,333.7 4,774.8 10.18    13,362.5 14,606.8 9.31

Note:  Passenger figures exclude transit and general aviation passengers.

Consolidated Results for 3Q12

Total revenues for 3Q12 increased year-over-year by 16.50% to Ps.1,222.01
million. This was mainly due to increases of:

  o14.27% in revenues from aeronautical services, principally as a result of
    the 10.18% rise in passenger traffic;
  o14.52% in revenues from non-aeronautical services, reflecting the 15.94%
    increase in commercial revenues detailed below; and
  o35.21% in revenues from construction services as a result of capital
    expenditures and other investments in concessioned assets during the
    period.

ASUR classifies commercial revenues as those derived from the following
activities: duty-free stores, car rentals, retail operations, banking and
currency exchange services, advertising, teleservices, non-permanent ground
transportation, food and beverage, and parking lot fees.

Commercial revenues increased by 15.94% year-over-year during the quarter,
principally due to the 10.18% increase in passenger traffic. There were
increases in revenues in the following activities:

  o41.10% in advertising;
  o18.17% in retail operations;
  o15.62% in car rental revenues;
  o15.08% in banking and currency exchange services;
  o13.95% in food and beverage;
  o10.55% in duty-free stores;
  o4.90% in ground transportation;
  o4.11% in parking lot fees; and
  o24.55% in other revenue.

These increases more than offset the 11.18% decline in teleservices.

Retail and Other Commercial Space
Opened since June 30, 2011
Business Name                   Type            Opening Date
Cancun
Traffic Tours                   Tourism booth   September 2011
Starbucks Cafe                  Food & beverage July 2011
Merida
Sunglass Island                 Retail          July 2012
Kukis                           Retail          March 2012
Villahermosa
Operadora de Tiendas exclusivas Retail          June 2012
Snack Bar Aqua                  Food & beverage June 2012
Tienda de Artesanias            Retail          August 2012
Veracruz
Rent a Matic Itza               Car rentals     August 2012

Construction revenues and expenses. ASUR is required by IFRIC 12 to include in
its income statement an income line reflecting the income from construction or
improvements to concessioned assets made during the period. During 3Q12, ASUR
recognized Ps.145.63 million in revenues from "Construction Services" because
of improvements to its concessioned assets, a 35.21% year-on-year increase.
The same amount is recognized under the expense line "Construction Costs"
because ASUR hires third parties to provide construction services.

Because equal amounts of Construction Revenues and Construction Expenses have
been included in ASUR's income statement as a result of the application of
IFRIC 12, the increase in Construction Revenues in 3Q12 did not result in a
proportionate increase in the EBITDA Margin, which is equal to EBITDA divided
by total revenues.

Total operating costs and expenses for 3Q12 increased 13.03% year-over-year.
This was primarily due to the following increases:

  o35.21% in construction costs, due to greater improvements made to the
    concessioned assets during the period;
  o6.08% in costs of services, principally reflecting higher sales volumes,
    and therefore higher costs of sales at the convenience stores directly
    operated by ASUR, and higher fees paid to third parties in connection with
    ASUR's participation in international projects. Increased insurance costs,
    as well as the costs of a bond required in connection with an appeal of a
    decision overturning a tax credit, and higher maintenance expenses also
    contributed to the increase;
  o9.50% in administrative expenses mainly due to higher professional fees
    paid to third parties and travel expenses in connection with the Munoz
    Marin Airport in San Juan, Puerto Rico ("LMM") project;
  o17.76% in the technical assistance fee paid to ITA, reflecting the
    increase in EBITDA for the quarter (a factor in the calculation of the
    fee);
  o15.03% in concession fees paid to the Mexican government, mainly due to an
    increase in regulated revenues (a factor in the calculation of the fee);
    and
  o4.47% in depreciation and amortization, resulting mainly from capitalized
    investments. 

Operating margin for the quarter increased to 48.34% from 46.76% in 3Q11. This
was mainly due to the 16.50% increase in revenues which more than offset the
13.03% increase in expenses during the period.

Comprehensive Financing Gain (Loss) for 3Q12 was a Ps.6.69 million loss,
compared to a Ps.21.2 million gain in 3Q11, principally due to a foreign
exchange loss during the quarter as compared to a foreign exchange gain in
3Q11.

During 3Q12, ASUR reported a foreign exchange loss of Ps.9.08 million which
principally resulted from the 6.74% appreciation of the Mexican peso against
the U.S. dollar during the period derived of a foreign currency net asset
position.

Interest expense declined in 3Q12 by Ps.4.60 million year-on-year, principally
reflecting lower debt levels as a result of the Ps.277.5 million in principal
payments made during 3Q12. Interest income increased by Ps.1.53 million
year-on-year reflecting higher investments resulting from the increase in net
income during the period.

Comprehensive Financing Result (Cost)

                              3Q11     3Q12     Change   %
                                                         Change
Interest income               (19,812) 21,342   1,530    8
Interest expenses             (13,674) (9,079)  4,596    34


Loss (gains) on valuation of  637      --       (637)    (100.)

derivative
Foreign exchange gain (loss), 14,436   (18,952) (33,389) (231)
net
Total                         21,211   (6,689)  (27,901) (132)
                              9M11     9M12     Change   %
                                                         Change
Interest income               59,998   62,766   2,768    5
Interest expenses             (44,954) (29,223) 15,731   (35)
Loss (gains) on valuation of
                              2,061    601      (1,460)  (71)
Derivative
Foreign exchange gain (loss), 11,207   (22,838) (34,045) (304)
net
Total                         28,312   11,306   (17,006) (60)
                              2011     2012
Exchange rate at September    13.7994  12.8695
Exchange rate at June         11.7230  13.4084

Income Taxes. Following the changes in Mexican tax law that took effect on
January 1, 2008, which established a new flat rate business tax ("Impuesto
Empresarial a Tasa Unica" or "IETU") and eliminated the asset tax, the Company
evaluates and reviews its deferred assets and liabilities position as applied
by Mexican Tax laws.

Income taxes for 3Q12 increased by 18.04%, or Ps.26.75 million year-over-year,
principally due to the following factors:

  oProvisional IETU payments of Ps.5.40 million by some of ASUR's
    subsidiaries;
  oA Ps.18.55 million increase in the provision for income taxes, as a result
    of a higher taxable base resulting from the 16.50% increase in revenues
    during the period, which more than offset the 13.03% increase in operating
    costs.
  oA Ps.9.90 million increase in deferred income taxes resulting from the
    recognition of inflationary effects;
  oA Ps.2.65 million decline in deferred IETU because of the expiration of
    tax credits; and
  oA Ps.0.26 million decline in the asset tax for amounts that cannot be
    credited against other taxes.

Net income for 3Q12 increased by 12.55% to Ps.409.07 million from Ps.363.45
million in 3Q11. Earnings per common share for the quarter were Ps.1.3636, or
earnings per ADS (EPADS) of US$1.0595 (one ADS represents ten series B common
shares). This compares with earnings per share of Ps.1.2115, or EPADS of
US$0.9414, for the same period last year.

Table IV: Summary of Consolidated Results for 3Q12

                                3Q11      3Q12      % Change
Total Revenues                  1,048,979 1,222,011 16.50
Aeronautical Services           615,896   703,766   14.27
Non-Aeronautical Services       325,378   372,618   14.52
 Commercial Revenues 282,158   327,130   15.94
Construction Services           107,705   145,627   35.21
Operating Profit                490,480   590,746   20.44
Operating Margin %              46.76%    48.34%    3.37%
EBITDA                          587,213   691,802   17.81
EBITDA Margin %                 55.98%    56.61%    1.13%
Net Income                      363,451   409,066   12.55
Earnings per Share              1.2115    1.3636    12.55
Earnings per ADS in US$         0.9414    1.0595    12.55

Note: U.S. dollar figures are calculated at the exchange rate of US$1 =
Ps.12.8695.

Table V: Commercial Revenues per Passenger for 3Q12

                                3Q11    3Q12    % Change
Total Passengers ('000)         4,382   4,824   10.09
Total Commercial Revenues       282,158 327,130 15.94
Commercial revenues from direct 65.308  81,649  25.02
 operations ^(1)
Commercial revenues excluding   216,850 245,481 13.20
 direct operations



                                            3Q11  3Q12  % Change
Total Commercial Revenue per Passenger      64.40 67.81 5.30
Commercial revenue from direct              14.90 16.93 13.62
 operations per passenger ^(1)
Commercial revenue per passenger (excluding 49.50 50.88 2.79
 direct operations)

Note: For purposes of this table, approximately 69,800 and 48,900 transit and
general aviation passengers are included for 3Q11 and 3Q12, respectively.

(1) Revenues from direct commercial operations represent ASUR's operation of
convenience stores in airports and the direct sale of advertising space.

Table VI: Operating Costs and Expenses for 3Q12

                                 3Q11    3Q12    % Change
Cost of Services                 236,382 250,766 6.08
Construction Costs 107,704 145,627 35.21
Administrative                   43,268  47,378  9.50
Technical Assistance             30,958  36,455  17.76
Concession Fees                  43,454  49,983  15.03
Depreciation and Amortization    96,733  101,056 4.47
TOTAL                            558,499 631,265 13.03

Consolidated Results for the Nine-Months Ended September 30, 2012

Total revenues for 9M12 increased year-over-year by 18.00% to Ps.3,783.5
million, mainly due to the following increases:

  o14.66% in revenues from aeronautical services as a result of the 9.31%
    increase in passenger traffic during the period;
  o19.78% in revenues from non-aeronautical services, principally as a result
    of the 21.44% increase in commercial revenues detailed below; and
  o32.75% in construction services in connection with higher investments
    during the period.

Commercial revenues for 9M12 rose by 21.44% year-over-year, principally as a
result of revenue increases in the following areas:

  o38.76% in advertising;
  o24.18% in retail operations;
  o23.65% in other income;
  o22.95% in duty-free stores;
  o18.18% in banking and currency exchange services;
  o16.82% in food and beverage;
  o14.54% in car rentals;
  o12.35% in ground transportation services;
  o4.41% in teleservice; and
  o3.17% in parking lot fees.

Total operating costs and expenses for 9M12 rose 13.47%, mainly due to the
following increases:

  o32.75% in construction costs resulting from higher investments;
  o7.52% in cost of services, principally reflecting higher energy costs,
    security and maintenance, and professional fees to third parties in
    connection with ASUR's participation in international bidding processes.
    Higher costs of sales as a result of higher sales volumes at the
    convenience stores directly operated by ASUR also contributed to the
    increase;
  o10.07% in administrative expenses, principally due to travel expenses in
    connection with international bidding projects;
  o19.86% in technical assistance costs, reflecting the corresponding
    increase in EBITDA during the period;
  o15.81% in concession fees, mainly due to the increase in regulated
    revenues (a factor in the calculation of the fee); and
  o4.80% in depreciation and amortization mainly due to changes in the
    depreciation and amortization rates.

Operating margin increased to 51.82% for 9M12, from 49.90% in 9M11. This was
mainly the result of the 18.00% growth in revenues which more than offset the
13.47% increase in operating expenses for the period.

Net income for 9M12 increased by 20.86% to Ps.1,410.27 million. Earnings per
common share for the period were Ps.4.7009, or earnings per ADS (EPADS) of
US$3.6527 (one ADS represents ten series B common shares). This compares with
Ps.3.8896, or EPADS of US$3.0224, for the same period last year.

Table VII: Summary of Consolidated Results for 9M12

 (in thousands)

                          9M11      9M12      % Change
Total Revenues            3,206,485 3,783,500 18.00
Aeronautical Services     1,887,992 2,164,726 14.66
Non-Aeronautical Services 1,013,898 1,214,437 19.78
Commercial Revenues       881,662   1,070,649 21.44
Construction Services     304,595   404,337   32.75
Operating Profit          1,600,024 1,960,657 22.54
Operating Margin %        49.90%    51.82%    3.84%
EBITDA                    1,885,940 2,260,284 19.85
EBITDA Margin %           58.82%    59.74%    1.57%
Net Income                1,166,887 1,410,267 20.86
Earnings per Share        3.8896    4.7009    20.86
Earnings per ADS in US$   3.0224    3.6527    20.86

Note: U.S. dollar figures are calculated at the exchange rate of US$1 =
Ps.13.4084.

Table VIII: Commercial Revenues per Passenger for 9M12

(in thousands)

                                  9M11    9M12      % Change
Total Passengers *('000)          13,517  14,759    9.19
Total Commercial Revenues         881,662 1,070,649 21.44
Commercial revenues from         191,115 249,444   30.52
direct operations ^(1)
Commercial revenues              690,547 821,205   18.92
excluding direct operations



                                       9M11  9M12  % Change
Total Commercial Revenue per Passenger 65.23 72.54 11.21
Commercial revenue from
 direct operations per            14.14 16.90 19.52
 passenger ^(1)
Commercial revenue per
 passenger (excluding direct      51.09 55.64 8.91
 operations)

* For purposes of this table, approximately 249,200 and 151,800 transit
and general aviation passengers are included for 9M11 and 9M12, respectively.

(1)  Revenues from direct commercial operations represent ASUR's operation
of convenience stores in airports and the direct sale of advertising space.

Table IX: Operating Costs and Expenses for 9M12

(in thousands)

                              9M11      9M12      % Change
Cost of Services              658,852   708,390   7.52
Construction Costs            304,595   404,337   32.75
Administrative                123,549   135,992   10.07
Technical Assistance          99,300    119,020   19.86
Concession Fees               134,249   155,477   15.81
Depreciation and Amortization 285,916   299,627   4.80
TOTAL                         1,606,461 1,822,843 13.47

Tariff Regulation

The Mexican Ministry of Communications and Transportation regulates the
majority of ASUR's activities by setting maximum rates, which represent the
maximum possible revenues allowed per traffic unit at each airport.

ASUR's regulated revenues for 9M12 were Ps.2,362.74 million, resulting in an
annual average tariff per workload unit of Ps.157.06. ASUR's regulated
revenues accounted for approximately 62.45% of total income for the period.

The Mexican Ministry of Communications and Transportation reviews compliance
with the maximum rates on an annual basis at the close of each year.

Balance Sheet

On September 30, 2012, Airport Concessions represented 82.31% of the Company's
total assets, with current assets representing 16.02% and other assets
representing 1.67%.

Cash and cash equivalents on September 30, 2012 were Ps.1,941.59 million, a
26.93% increase from the Ps.1,529.67 million in cash and cash equivalents
recorded on December 31, 2011.

Shareholders' equity at the close of 3Q12 was Ps.15,806.59 million and total
liabilities were Ps.2,936.43 million, representing 84.33% and 15.66% of total
assets, respectively. Deferred liabilities represented 72.54% of the Company's
total liabilities.

Total bank debt at September 30, 2012 was Ps.414.4 million, including Ps.1.3
million in accrued interest. During August and September of 2010, Cancun
Airport entered into two three-year credit agreements of Ps.350 million and
Ps.570 million with two banks. The terms of the agreements include a floating
interest rate based on the Tasa de Interes Interbancaria de Equilibrio (TIIE)
plus 1.5% and quarterly principal payments. In addition, in September of 2011,
Veracruz Airport entered into a three-year credit agreement of Ps.50 million.
The terms include a floating interest rate based on the Tasa de Interes
Interbancaria de Equilibrio (TIIE) plus 0.75% and quarterly principal
payments.

During the quarter, ASUR made aggregate principal payments of Ps.98.1 million
in connection with the Ps.350 million, Ps.570 million and Ps.50 million
three-year credit agreements.

In the fourth quarter of 2011, Cancun Airport obtained authorization for two
new bank loans from Banamex and BBVA Bancomer of US$300 million and Ps.1,500
million, respectively. These loans remain subject to certain conditions
precedent, including the negotiation of definitive documentation for the
loans. To date, ASUR has not yet made use of the authorized credit lines.

Capital Expenditures

During 3Q12, ASUR made investments of Ps.122.15 million as part of ASUR's
ongoing plan to modernize its airports pursuant to its master development
plans.

Recent Events

ASUR and Highstar Capital Win Bid to be Private Operator of Luis Munoz Marin
Airport in San Juan, Puerto Rico

On July 19, 2012 ASUR announced that the Puerto Rico Public-Private
Partnership Committee declared Aerostar Airport Holdings ("Aerostar") the
winner of a public bidding process to become the private operators of the Luis
Munoz Marin international airport in San Juan, Puerto Rico ("LMM Airport").
Aerostar is a limited liability company owned 50% by each of ASUR (through its
Cancun Airport subsidiary) and Highstar Capital IV.

LMM Airport handles over 8.5 million passengers per year and is served by over
14 airlines. LMM airport generates over 8,000 direct and indirect jobs and
recently opened the newly-constructed Terminal A, which is currently served by
JetBlue. Aerostar intends to transform LMM into a world-class airport through
a capital investment program of over $1.4 billion during the term of the
lease, while working with the airport community and airlines to better serve
passengers.

On July 24, 2012 Aerostar signed a lease agreement (the "Lease Agreement") for
LMM Airport with the Puerto Rico Ports Authority (the "PRPA"). The closing of
the Lease Agreement, however, is subject to a number of conditions precedent,
including approval of the Lease Agreement and the award of a Part 139
operating certificate by the U.S. Federal Aviation Administration ("FAA") as
previously disclosed. The Lease Agreement has a term of 40 years and involves
an upfront payment of $615 million, which is expected to be funded by a
mixture of debt financing incurred by Aerostar and equity contributions by
each of ASUR (through its Cancun Airport subsidiary) and Highstar Capital IV.

Following the execution of the Lease Agreement, Aerostar and the PRPA have
undertaken a number of critical steps towards the closing:

  oThe PRPA submitted an application to the FAA for approval of the Lease
    under the FAA's Airport Privatization Pilot Program.
  oAerostar has also begun discussions with the FAA regarding its application
    for a Part 139 operating certificate.
  oAerostar named the transition team for its operations at LMM airport. The
    transition team has already begun meeting with airlines, concessionaires
    and other stakeholders at LMM Airport to help facilitate a smooth
    transition to the closing of the Lease.

The current capital structure for Aerostar is as follows:

  oEach of Highstar and ASUR own 50% of the membership interests in Aerostar.
  oAerostar has received financing commitments from a syndicate of
    international and Puerto Rican banks for a term loan of up to $350 million
    of the upfront leasehold fee, a term loan of $50 million for capital
    expenditures and a $10 million revolving credit facility.
  oASUR has committed to lend Aerostar up to $100 million to fund the payment
    of the upfront leasehold fee due under the Lease, which is subject to
    adjustment based on the amount of third party financing available to
    Aerostar. The commitment for this loan provides that it would be
    subordinated to senior indebtedness, bear interest at LIBOR plus 2.00% and
    be required to be repaid by Aerostar from cash available for distribution
    in priority to equity distributions to ASUR and Highstar Capital IV.
  oIn exchange for ASUR's loan commitment, Highstar Capital IV has granted
    ASUR certain benefits, including an agreement that if Highstar Capital IV
    sells any of its interest in Aerostar and ASUR's Cancun airport subsidiary
    continues to hold at least 25% of Aerostar's membership units, ASUR will
    be entitled to 20% of Highstar Capital IV's realized investment return on
    such sale in excess of 14% per annum.

For more details related to these recent events, refer to ASUR's press
releases issued on July 19 and 24, and September 12, 2012.

IFRS Adoption

In compliance with regulations established by the Mexican National Banking and
Securities Commission (CNBV), as of January 1, 2012 the Company has adopted
International Financial Reporting Standards (IFRS) as the accounting standards
to prepare its financial statements.

Furthermore, and in compliance with INIF 19 "Changes derived from the adoption
of IFRS," the most significant accumulated changes in net shareholders' equity
as of January 1, 2011 are included in the table below:

Effects on the initial Shareholders' Equity
resulting from the adoption of IFRS as of January 1, 2011

(in thousands of Mexican Pesos)
                                Capital     Retained  Legal    Total
                                  Stock       Earnings  Reserve  Shareholders'
Item        Description                                          Equity
            Elimination of
            severance liabilities
Labor       according to NIF D-3              7,835              7,835
liabilities and creation of a
            liability under IAS
            19 Net
Deferred    Reversal of deferred
employee    employee profit
profit      sharing as it is                  (2,905)            (2,905)
sharing     outside the reach of
            IAS 12
Creation    Recognition of
of a        accrued vacation                                    
reserve     rights not used by
for         year-end.                         (18,339)           (18,339)
vacation
Deferred    Impact on deferred
Assets      IETU derived from the                               
(income     recognition of
tax and     provisions for                    3,534              3,534
flat tax)   vacations and
            employee benefits
Capital     Elimination of        (5,031,928)                    (5,031,928)
Stock       inflation accounting.
Legal       Elimination of                              (23,025) (23,025)
Reserve     inflation accounting
Capital     Reclassification of
Stock and   inflation accounting              
Legal       of capital stock and                                 5,054,953
Reserve     legal reserve to                  5,054,953
            retained earnings
TOTAL                             (5,031,928) 5,045,078 (23,025) (9,875)

The following table presents the principal effects of IFRS on Shareholders'
Equity as of September 30, 2012, December 31, 2011 and January 1, 2011:

(In thousands of Mexican Pesos)        September 30, December 31,  January 1,
                                       2012          2011         2011
Shareholders' Equity Under Mexican     15,820,904    15,487,813   14,795,457
Financial Reporting Standards
IFRS Adjustments:
Deferred Employee Profit Sharing (Note (3,862)       (3,862)      (2,905)
b)
Severance Liability and actuarial
gains and losses                       10,836        10,342       7,835
(Note e)
Reserve for Vacations (Note f)         (23,502)      (22,099)     (18,339)
Deferred IETU (Note c)                2,217         4,218        3,534
Total IFRS Adjustments                 (14,311)      (11,401)     (9,875)
Shareholders' Equity Under IFRS        15,806,593    15,476,412   14,785,582

See page 22 for notes on IFRS transition effects.

The following table presents the principal effects of IFRS on the Income
Statement for the nine-month period ended on September 30, 2011 and 2012.

(In thousands of Mexican                                
Pesos)                        3Q12    3Q11    9M12                Jan-Dec 2011
                                                        9M11
Net Income Under Mexican                                          
Financial Reporting Standards 409,339 363,693 1,413,091 1,170,082
                                                                  1,592,356
Elimination of severance
liabilities                                                       
according with NIF D-3 and    -203    565     580       2,138
creation of                                                       3,244
a liability under IAS 19 –
Net (Note e)
Elimination of PTU difference                                     (957)
Recognition of accrued rights
not used                      -601    -1,222  (1,403)   (3,234)   -3760
(Note f)
Effect on deferred IETU
resulting from
the recognition of a reserve
for                           531     415     (2,001)   (2,099)   684
vacation and employee
benefits (Note
c)
Net Income Under IFRS         409,066 363,451 1,410,267 1,166,887 1,591,567
Actuarial Gains and Losses    (265)   (184)   (86)      (553)     (737)
Comprehensive Net Income
Under                         408,801 363,267 1,410,181 1,166,334 1,590,830
IFRS

See page 22 for notes on IFRS transition effects.

3Q12 Earnings Conference Call

Day:        Wednesday, October 24, 2012
Time:         10:00 AM US ET; 9:00 AM Mexico City
                 time
Dial-in number: 1-888-846-5003 (US & Canada) and 1-480-629-9856
                 (International & Mexico)
Access Code:    4569419
                 Please dial in 10 minutes before the scheduled start time.
                 Wednesday, October 24, 2012 at 1:00 PM US ET, ending at
Replay:          midnight US ET on Wednesday, October 31, 2012. Dial-in
                 number: 1-877-870-5176 (US & Canada); 1-858-384-5517
                 (International & Mexico). Access Code: 4569419.

Analyst Coverage

Actinver Casa de Bolsa, Barclays,  BBVA Bancomer, BofA Merrill Lynch, Citi
Investment Research, Credit Suisse, Grupo Bursatil Mexicano, Grupo Financiero
Interacciones, Grupo Financiero Monex, Intercam Casa de Bolsa, Itau BBA,
INVEX, JP Morgan, Morgan Stanley, Morningstar, Santander Investment, Scotia
Capital, UBS Casa de Bolsa, Vector.

Note: ASUR is covered by the aforementioned analysts. Please note that any
opinions, estimates or forecasts regarding the performance of ASUR issued by
these analysts reflect their own views, and therefore do not represent the
opinions, estimates or forecasts of ASUR or its management. Although ASUR may
refer to or distribute such statements, this does not imply that ASUR agrees
with or endorses any information, conclusions or recommendations included
therein.

About ASUR:

Grupo Aeroportuario del Sureste, S.A.B. de C.V. (ASUR) is a Mexican airport
operator with concessions to operate, maintain and develop the airports of
Cancun, Merida, Cozumel, Villahermosa, Oaxaca, Veracruz, Huatulco, Tapachula
and Minatitlan in the southeast of Mexico. The Company is listed both on the
NYSE in the U.S., where it trades under the symbol ASR, and on the Mexican
Bolsa, where it trades under the symbol ASUR. One ADS represents ten (10)
series B shares.

Some of the statements contained in this press release discuss future
expectations or state other forward-looking information. Those statements are
subject to risks identified in this press release and in ASUR's filings with
the SEC. Actual developments could differ significantly from those
contemplated in these forward-looking statements. The forward-looking
information is based on various factors and was derived using numerous
assumptions. Our forward-looking statements speak only as of the date they are
made and, except as may be required by applicable law, we do not have an
obligation to update or revise them, whether as a result of new information,
future or otherwise.

TABLES TO FOLLOW

Grupo Aeroportuario del Sureste, S.A.B. de C.V.
Operating Results per Airport
Thousands of Mexican pesos
                           3Q 2011            3Q 2012            9M 2011            9M 2012
Item             3Q        Per      3Q        Per      9M 2011   Per      9M 2012   Per
                 2011      Workload 2012      Workload           Workload           Workload
                           Unit               Unit               Unit               Unit
Cancun ^(1)
Aeronautical     454,019   139.7    528,224   145.2    1,415,338 138.4    1,635,179 145.2
Revenues
Non-Aeronautical 284,069   87.4     328,370   90.3     893,570   87.4     1,085,231 96.4
Revenues
Construction     42,927    13.2     89,560    24.6     134,114   13.1     256,127   22.7
Services
Total Revenues   781,015   240.4    946,154   260.1    2,443,022 238.9    2,976,537 264.4
Operating Profit 402,638   123.9    477,132   131.2    1,264,357 123.6    1,599,883 142.1
EBITDA           465,997   143.4    541,508   148.9    1,451,431 141.9    1,792,010 159.2
Merida
Aeronautical     44,838    125.2    46,161    129.7    127,979   123.4    136,714   129.5
Revenues
Non-Aeronautical 12,413    34.7     13,539    38.0     35,701    34.4     39,390    37.3
Revenues
Construction     26,960    75.3     7,871     22.1     55,925    53.9     28,269    26.8
Services
Other ^(2)       -         -        7         -        -         -        19        -
Total Revenues   84,211    235.2    67,578    189.8    219,605   211.8    204,392   193.6
Operating Profit 17,480    48.8     17,170    48.2     49,434    47.7     50,949    48.2
EBITDA           25,266    70.6     25,273    71.0     72,789    70.2     75,255    71.3
Villahermosa
Aeronautical     27,813    116.9    31,433    122.3    73,612    114.0    89,372    121.6
Revenues
Non-Aeronautical 8,833     37.1     9,731     37.9     25,830    40.0     27,226    37.0
Revenues
Construction     8,528     35.8     4,450     17.3     13,399    20.7     5,646     7.7
Services
Other ^(2)       -         -        18        0.1      -         -        55        0.1
Total Revenues   45,174    189.8    45,632    177.6    112,841   174.7    122,299   166.4
Operating Profit 11,399    47.9     14,865    57.8     27,938    43.2     39,662    54.0
EBITDA           16,657    70.0     20,632    80.3     42,675    66.1     56,814    77.3
Other Airports
^(3)
Aeronautical     89,226    142.3    97,948    148.4    271,063   144.6    303,461   152.1
Revenues
Non-Aeronautical 20,063    32.0     20,978    31.8     58,797    31.4     62,590    31.4
Revenues
Construction     29,290    46.7     43,746    66.3     101,157   54.0     114,295   57.3
Services
Other ^(2)       18,000    28.7     4,556     6.9      40,431    21.6     6,180     3.1
Total Revenues   156,579   249.7    167,228   253.4    471,448   251.6    486,526   243.9
Operating Profit 33,657    53.7     27,503    41.7     102,618   54.8     93,837    47.0
EBITDA           53,658    85.6     49,959    75.7     162,392   86.7     158,825   79.6
Holding & Service
companies ^(4)
Construction     -         n/a    -         n/a    -         n/a    -         n/a
Services
Other ^(2)       198,541   n/a    228,871   n/a    641,856   n/a    672,929   n/a
Total Revenues   198,541   n/a    228,871   n/a    641,856   n/a    672,929   n/a
Operating Profit 25,306    n/a    54,076    n/a    155,677   n/a    176,326   n/a
EBITDA           25,635    n/a    54,430    n/a    156,653   n/a    177,380   n/a
Consolidation
Adjustment
Consolidation    (216,541) n/a    (233,452) n/a    (682,287) n/a    (679,183) n/a
Adjustment
Group
Aeronautical     615,896   137.7    703,766   143.3    1,887,992 137.0    2,164,726 143.9
Revenues
Non-Aeronautical 325,378   72.8     372,618   75.9     1,013,898 73.6     1,214,437 80.7
Revenues
Construction     107,705   24.1     145,627   29.7     304,595   22.1     404,337   26.9
Services
Total Revenues   1,048,979 234.6    1,222,011 248.9    3,206,485 232.6    3,783,500 251.5
Operating Profit 490,480   109.7    590,746   120.3    1,600,024 116.1    1,960,657 130.3
EBITDA           587,213   131.3    691,802   140.9    1,885,940 136.8    2,260,284 150.2
^(1) Reflects the results of operations of Cancun Airport and two Cancun Airport Services
subsidiaries on a consolidated basis.
^(2) Reflects revenues under intercompany agreements which are eliminated in the
consolidation adjustment.
^(3) Reflects the results of operations of our airports located in Cozumel, Huatulco,
Minatitlan, Oaxaca, Tapachula and Veracruz.
^(4) Reflects the results of operations of our parent holding company and our services
subsidiaries. Because none of these entities hold the concessions for our airports, wedo
not report workload unit data for theses entities.



 Grupo Aeroportuario del Sureste, S.A.B. de C.V.
 Consolidated Statement of Income from January 1 to September 30, 2012 and 2011
 Thousands of Mexican pesos
  I t e m            9M       9M       %        3Q       3Q       %
                     2011       2012       Change   2011       2012       Change
  Revenues
   Aeronautical      1,887,992  2,164,726  14.66    615,896    703,766    14.27
   Services
   Non-Aeronautical  1,013,898  1,214,437  19.78    325,378    372,618    14.52
   Services
   Construction      304,595    404,337    32.75    107,705    145,627    35.21
   Services
  Total Revenues     3,206,485  3,783,500  18.00    1,048,979  1,222,011  16.50
  Operating
  Expenses
   Cost of Services  658,852    708,390    7.52     236,382    250,766    6.08
   Cost of           304,595    404,337    32.75    107,704    145,627    35.21
   Construction
   General and
   Administrative    123,549    135,992    10.07    43,268     47,378     9.50
   Expenses
   Technical         99,300     119,020    19.86    30,958     36,455     17.76
   Assistance
   Concession Fee    134,249    155,477    15.81    43,454     49,983     15.03
   Depreciation and  285,916    299,627    4.80     96,733     101,056    4.47
   Amortization
  Total Operating    1,606,461  1,822,843  13.47    558,499    631,265    13.03
  Expenses
  Operating Income   1,600,024  1,960,657  22.54    490,480    590,746    20.44
  Comprehensive      28,312     11,305     (60.07)  21,211     (6,691)    (131.54)
  Financing Cost
  Non-Ordinary Item
   Non-Ordinary      -          -          -        -          -          -
   Item
  Income Before      1,628,336  1,971,962  21.10    511,691    584,055    14.14
  Income Taxes
   Provision for     11,624     12,328     6.06     4,190      5,404      28.97
   IETU
   Provision for     455,529    573,494    25.90    144,432    162,981    12.84
   Income Tax
   Provision for     8,336      8,597      3.13     3,126      2,866      (8.32)
   Asset Tax
   Deferred Income   (41,324)   (49,300)   19.30    (12,804)   (2,904)    (77.32)
   Taxes
   Deferred IETU     27,284     16,576     (39.25)  9,296      6,642      (28.55)
   Net Income for    1,166,887  1,410,267  20.86    363,451    409,066    12.55
   the Year
  Earning per Share  3.89       4.70       20.86    1.2115     1.3636     12.55
  Earning per
  American           3.02       3.65       20.86    0.9414     1.0595     12.55
  Depositary Share
  (in U.S. Dollars)
  Exchange rate per
  dollar Ps.
  12.8695



 Grupo Aeroportuario del Sureste, S.A.B. de C.V.
 Consolidated Balance Sheet as of September 30, 2012 and 2011
 Thousands of Mexican pesos
  I t e m                        September 2012  December 2011  January 2011
  A s s e t s
  Current Assets
    Cash and Cash Equivalents    1,941,590       1,529,667      1,442,879
    Trade Receivables, net       284,672         462,102        389,960
    Recoverable Taxes and Other  775,963         894,520        921,193
    Current Assets
  Total Current Assets           3,002,225       2,886,289      2,754,032
  Non Current Assets
    Machinery, Furniture and     313,536         306,504        305,629
    Equipment, net
    Airports Concessions, net    15,427,260      15,405,490     14,945,330
  Total Assets                  18,743,021      18,598,283     18,004,991
  Liabilities and Stockholders'
  Equity
  Current Liabilities
    Trade Accounts Payable       17,031          28,876         10,738
    Bank Loans                   374,254         374,640        243,102
    Accrued Expenses and Others  376,251         357,197        261,159
    Payables
  Total Current Liabilities      767,536         760,713        514,999
  Long Term Liabilities
    Bank Loans                   38,889          321,950        647,503
    Deferred Income Taxes        1,457,797       1,385,685      1,461,089
    Deferred Flat Rate Business  665,260         648,685        591,836
    Tax
    Labor Obligations            6,946           4,838          3,982
  Total Long Term Liabilities    2,168,892       2,361,158      2,704,410
  Total Liabilities              2,936,428       3,121,871      3,219,409
  Stockholders' Equity
    Capital stock                7,767,276       7,767,276      7,767,276
    Legal Reserve                412,878         333,261        264,092
    Share Repurchase Reserve     -               -              -
    Net Income for the Period    1,410,267       1,591,566      1,275,143
    IFRS Conversion Adjustment   5,044,255       5,044,341      5,045,078
    Retained Earnings           1,171,917       739,968        433,993
    Total Stockholders' Equity   15,806,593      15,476,412     14,785,582
  Total Liabilities and          18,743,021      18,598,283     18,004,991
  Stockholders' Equity



  Grupo Aeroportuario del Sureste, S.A.B. de C.V.
  Consolidated Statement of Cash flow from January 1 to September 30, 2012 and
  2011
  Thousands of Mexican pesos
 Related        9M         9M         %       3Q       3Q       %
                2011         2012         Change  2011       2012       Change
 Operating
 Activities
 Income Before  1,628,336    1,971,962    21       511,691    584,055    14
 Income Taxes
 Items Related
 with
 Investing
 Activities:
  Depreciation
  and           285,916      299,627      5        96,733     101,056    4
  Amortization
  Loss on
  Disposal of   -                         -        -                     -
  Fixed Assets
  Interest      (59,998)     (62,766)     5        (19,811)   (21,342)   8
  Income
  Provisions    -                         -        34,179                (100)
                                          -                              -
 Sub-Total      1,854,254    2,208,823    19       622,792    663,769    7
 Increase in
 Trade          39,636       177,429      348      18,063     68,451     279
 Receivables
 Decrease in
 Recoverable
 Taxes and      85,505       231,373      171      48,761     197,846    306
 other Current
 Assets
 Other
 Deferred       -            -            -        -          -          -
 Assets
 Income Tax     (147,899)    (348,434)    136      (147,899)  (348,434)  136
 Paid
  Trade
 Accounts       -            -            -        -          -          -
 Payable
  Accrued
 Expenses and   12,782       (157,487)    (1,332)  157        (15,826)   (10,180)
 Others
 Payables
  Long Term   -                         -        -          -          -
 Liabilities
 Net Cash Flow
 Provided by    1,844,278    2,111,704    15       541,874    565,806    4
 Operating
 Activities
 Investing
 Activities
 
 Investments
 in Machinery,  (305,253)    (405,050)    33       (144,558)  (122,150)  (16)
 Furniture and
 Equipment,
 net
 
 Investments
 in Rights to   -            -            -        -          -          -
 Use Airport
 Facilities
 
 Investments
 in             -            -            -        -          -          -
 Construction
 in Process
 
 Investments    -            -            -        -          -          -
 in Others
 Interest       59,998       62,766       5        19,811     21,342     8
 Income
 Net Cash Flow
 Provided by    (245,255)    (342,284)    40       (124,747)  (100,808)  (19)
 Investing
 Activities
 Excess Cash
 to Use in      1,599,023    1,769,420    11       417,127    464,998    11
 Financing
 Activities:
 Bank Loans     (100,831)    (277,497)    175      (42,497)   (92,499)   118
 Dividends      (900,000)    (1,080,000)  20       -          -          -
 Paid
 Tax on
 Dividends      (300,000)                 (100)    -          -          -
 Paid
 Net Cash Flow
 Provided by    (1,300,831)  (1,357,497)  4        (42,497)   (92,499)   118
 Financing
 Activities
 Net Increase
 in Cash and    298,192      411,923      38       374,630    372,499    (1)
 Cash
 Equivalents
 Cash and Cash
 Equivalents    1,442,879    1,529,667    6        1,366,441  1,569,091  15
 at Beginning
 of Period
 Cash and Cash
 Equivalents    1,741,071    1,941,590    12       1,741,071  1,941,590  12
 at the End of
 Period



Grupo Aeroportuario del Sureste, S.A.B. de C.V.
Consolidated Statement of Income from January 1 to September 30, 2012 and 2011
Thousands of Mexican pesos
 I t e m            9 Months                       9 Months                       3Q                             3Q
                    2011                             2012                             2011                             2012
                    Mexican  Transition IFRS     Mexican  Transition IFRS     Mexican  Transition IFRS     Mexican  Transition IFRS
                    NIF      effects               NIF      effects               NIF      effects               NIF      effects
 Revenues
  Aeronautical      1,887,992             1,887,992  2,164,726             2,164,726  615,896   -           615,896    703,766   0           703,766
  Services
  Non-Aeronautical  1,013,898             1,013,898  1,214,437             1,214,437  325,378   -           325,378    372,618   0           372,618
  Services
  Construction      304,595               304,595    404,337               404,337    107,704   -           107,704    145,627   0           145,627
  Services
 Total Revenues     3,206,485 -           3,206,485  3,783,500 -           3,783,500  1,048,978 -           1,048,978  1,222,011 -           1,222,011
 Operating
 Expenses
  Cost of Services  658,095   757         658,852    707,520   870         708,390    235,383   998         236,381    249,961   805         250,766
  Cost of           304,595               304,595    404,337               404,337    107,704   0           107,704    145,627   0           145,627
  Construction
  General and
  Administrative    643,014               643,014    710,116               710,116    214,414   -           214,414    234,872   -           234,872
  Expenses
 Total Operating    1,605,704 757         1,606,461  1,821,973 870         1,822,843  557,501   998         558,499    630,460   805         631,265
 Expenses
 Operating Income   1,600,781 (757)       1,600,024  1,961,527 (870)       1,960,657  491,477   (998)       490,479    591,551   (805)       590,746
 Comprehensive
 Financing Cost
  Interest          59,998                59,998     62,766                62,766     19,812    0           19,812     21,342    -           21,342
  Receivable
  Interest Payable  (44,954)              (44,954)   (29,224)              (29,224)   (13,675)  0           (13,675)   (9,080)   -           (9,080)
  Exchange
  (losses) gains,   11,207                11,207     (22,838)              (22,838)   14,436    0           14,436     (18,953)  -           (18,953)
  net
  Loss (gains) on
  Valuation of                                                             -          0         0           -          -         -           -
  Derivative
  Financial         2,061                 2,061      601                   601        637       -           637        -         -           -
  Instruments
 Non-Ordinary Item
  Non-Ordinary      (339)     339         -          47        (47)        -          339       (339)       -          -         -           -
  Item
 Income Before      1,629,432 (1,096)     1,628,336  1,972,785 (823)       1,971,962  512,348   (659)       511,689    584,860   (805)       584,055
 Income Taxes
  Provision for     11,624                11,624     12,328                12,328     4,190     0           4,190      5,404     -           5,404
  IETU
  Provision for     455,529               455,529    573,494               573,494    144,432   0           144,432    162,981   -           162,981
  Income Tax
  Provision for     8,336                 8,336      8,597                 8,597      3,126     0           3,126      2,866     -           2,866
  Asset Tax
  Deferred Income   (41,324)              (41,324)   (49,300)              (49,300)   (12,804)  0           (12,804)   (2,904)   -           (2,904)
  Taxes
  Deferred IETU     25,185    2,099       27,284     14,575    2,001       16,576     9,711     (417)       9,294      7,173     (531)       6,642
  Net Income for    1,170,082 (3,195)     1,166,887  1,413,091 (2,824)     1,410,267  363,693   (242)       363,451    409,340   (274)       409,066
  the Year
 Earning per Share  3.90      (0.01)      3.89       4.71      (0.01)      4.70       1.21      (0.00)      1.21       1.36      (0.00)      1.36
 Earning per
 American
 Depositary         3.03      (0.01)      3.02       3.66      (0.01)      3.65       0.94      (0.00)      0.94       1.06      (0.00)      1.06
 Share
 (in U.S. Dollars)
 Exchange rate per
 dollar Ps.
 12.8695



 Grupo Aeroportuario del Sureste, S.A.B. de C.V.
 Consolidated Balance Sheet as of September 30, 2012 and 2011
 Thousands of Mexican pesos
  I t e m         September 2012                     December 2011                      January 2011
                  Mexican   Transition IFRS      Mexican   Transition IFRS      Mexican   Transition IFRS
                  NIF       effects                NIF       effects                NIF       effects
  A s s e t s
  Current Assets
   Cash and Cash  1,941,590              1,941,590   1,529,667              1,529,667   1,442,879              1,442,879
   Equivalents
   Trade
   Receivables,   284,672                284,672     462,102                462,102     389,960                389,960
   net
   Recoverable
   Taxes and      775,963                775,963     894,520                894,520     921,193                921,193
   Other Current
   Assets
  Total Current   3,002,225  -           3,002,225   2,886,289  -           2,886,289   2,754,032  -           2,754,032
  Assets
  Non Current
  Assets
   Machinery,
   Furniture and  313,536                313,536     306,504                306,504     305,629                305,629
   Equipment,
   net
   Airports
   Concessions,   15,427,260             15,427,260  15,405,490             15,405,490  14,945,330             14,945,330
   net
   Deferred
   eEmployees'
   Statutory      3,862      (3,862)     -           3,862      (3,862)     -           2,905      (2,905)     -
   Profit
   Sharing
  Total Non       15,431,122 (3,862)     15,427,260  15,715,856 (3,862)     15,711,994  15,253,864 (2,905)     15,250,959
  Current Assets
  Total Assets   18,746,883 (3,862)     18,743,021  18,602,145 (3,862)     18,598,283  18,007,896 (2,905)     18,004,991
  Liabilities
  and
  Stockholders'
  Equity
  Current
  Liabilities
   Trade
   Accounts       17,031                 17,031      28,876                 28,876      10,738                 10,738
   Payable
   Bank Loans     374,254                374,254     374,640                374,640     243,102                243,102
   Accrued
   Expenses and   352,749    23,502      376,251     335,098    22,099      357,197     242,820    18,339      261,159
   Others
   Payables
  Total Current   744,034    23,502      767,536     738,614    22,099      760,713     496,660    18,339      514,999
  Liabilities
  Long Term
  Liabilities
   Bank Loans     38,889                 38,889      321,950                321,950     647,503                647,503
   Deferred       1,457,797              1,457,797   1,385,685              1,385,685   1,461,089              1,461,089
   Income Taxes
   Deferred Flat
   Rate Business  667,477    (2,217)     665,260     652,903    (4,218)     648,685     595,370    (3,534)     591,836
   Tax
   Labor          17,782     (10,836)    6,946       15,180     (10,342)    4,838       11,817     (7,835)     3,982
   Obligations
  Total Long
  Term            2,181,945  (13,053)    2,168,892   2,375,718  (14,560)    2,361,158   2,715,779  (11,369)    2,704,410
  Liabilities
  Total           2,925,979  10,449      2,936,428   3,114,332  7,539       3,121,871   3,212,439  6,970       3,219,409
  Liabilities
  Stockholders'
  Equity
   Capital Stock  12,799,204 (5,031,928) 7,767,276   12,799,204 (5,031,928) 7,767,276   12,799,204 (5,031,928) 7,767,276
   Legal Reserve  430,492    (17,614)    412,878     350,875    (17,614)    333,261     287,117    (23,025)    264,092
   Share
   Repurchase     -                      -           -                                  -                      -
   Reserve
   Net Income
   for the        1,413,091  (2,824)     1,410,267   1,592,356  (790)       1,591,566   1,275,143              1,275,143
   Period
   IFRS
   Conversion     -          5,044,255   5,044,255   -          5,044,341   5,044,341   -          5,045,078   5,045,078
   Adjustment
   Retained       1,178,117  (6,200)     1,171,917   745,378    (5,410)     739,968     433,993                433,993
   Earnings
   Total
   Stockholders'  15,820,904 (14,311)    15,806,593  15,487,813 (11,401)    15,476,412  14,795,457 (9,875)     14,785,582
   Equity
  Total
  Liabilities
  and             18,746,883 (3,862)     18,743,021  18,602,145 (3,862)     18,598,283  18,007,896 (2,905)     18,004,991
  Stockholders'
  Equity

REVIEW OF THE IMPACT OF TRANSITIONING TO IFRS

Below is a description of significant changes on IFRS implementation:

a) Inflation

The Company determined the inflationary effects relating to the capital stock
and legal reserve accounts should be eliminated in accordance with
International Accounting Standards "IAS" 21 and 29, which were in effect on
the date IFRS was adopted.

Based on IFRS 1, the Company has determined it does not have to eliminate the
effects of inflation on concessions. This is due to the decision of the
Company to apply the transition rules of IFRIC 12 as part of the initial
adoption of IFRS 1, which allow for the exception from retrospective
application in cases where the "impracticability" of reconstructing asset
balances is too significant. Therefore, the Company has recorded the account
balances previously registered under Mexican FRS, which contain the effects of
inflation through December 31, 2007, as opening balances for the adoption of
IFRIC 12.

b) Deferred taxes and deferred income tax or IETU tax

The Company has determined that it must recognize both forms of taxes (income
tax or flat tax for each one of its subsidiaries) for the determination of
deferred taxes based on its income projections.

c) Labor liabilities and employee profit sharing

On the date IFRS was adopted the Company eliminated the liability relating to
deferred profit sharing and severance as an adjustment to its opening balance
sheet.

d) Creation of a reserve for unused vacations

On the date IFRS was adopted, the Company recognized an accrual for the
vacation rights not used by year-end, according to IAS 19 "Employee Benefits".

e) Non ordinary items in the income statement

The line in the income statement named "Non ordinary items" has been
reclassified as "Operating expenses" because IFRS does not recognize
extraordinary items as a line in the income statement.

SOURCE Grupo Aeroportuario del Sureste, S.A.B. de C.V.

Contact: In Mexico, ASUR, Lic. Adolfo Castro, +(52) 5552-84-04-08,
acastro@asur.com.mx; or In the U.S., Breakstone Group, Susan Borinelli,
+1-646-330-5907, sborinelli@breakstone-group.com