United Air Makes Mile Redemptions Subject to Supply and Demand

A United Continental Holdings Inc. airplane sits outside the company's terminal at Newark Liberty International Airport.

Photographer: Tim Fadek/Bloomberg
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United Continental Holdings Inc. will stop publishing charts showing the miles needed to obtain tickets through its frequent flyer program, allowing for a wider -- and more expensive -- range of prices.

The move follows a similar decision by rival Delta Air Lines Inc. in 2014 to scrap fixed tables in favor of dynamically pricing award tickets. The change allows a carrier to maximize revenue during peak travel periods. Southwest Airlines Co. has adopted a similar approach for award travel.