Southwest-JetBlue Seen Reprising Flight-Slot Duel on AMR Merger

The sale of prized airport flight slots as part of the American Airlines-US Airways Group Inc. merger is poised to trigger a second faceoff between the country’s biggest low-cost carriers.

JetBlue Airways Corp. was the victor in a 2011 auction for access to Washington’s Reagan National and New York’s LaGuardia, topping larger Southwest Airlines Co. Now, flight rights at the airports are going on the block again under the settlement ending the U.S. lawsuit over the American-US Airways tie-up.