JetBlue, AA End Interline, Frequent Flyer Partnership

American Airlines and JetBlue Airways said they will no longer accept new interline reservations. Effective April 1, passengers will no longer earn miles or points when traveling on eligible routes operated by the other airline. Points and miles already earned will not be affected. The two carriers signed an interline agreement in 2010. Under the agreement, they traded passengers at New York’s JFK Airport and Boston’s Logan Airport, adding reciprocal frequent flyer benefits later that year.

They did not provide any reason for ending the relationship. Possible factors include JetBlue’s announcement that it would enter the transcontinental premium service market, including private “suites,” in the second quarter of this year, and American’s merger with US Airways, whose significant presence on the East Coast can provide feed to American’s flights at JFK and Logan.