I realize I’m a bit late to the game here, so my apologies, but I figured this was worth a mention nonetheless.
American, Delta, and United, are all offering triple elite qualifying miles and triple redeemable miles on select routes.
American is offering triple miles between New York LGA and Chicago as well as New York LGA and Boston for flights purchased and flown between June 14 August 31.
Delta is offering triple miles on all their Shuttle routes during the same time period. This includes their flights between New York LGA and Chicago, Boston, and Washington DC.
Lastly, United is offering triple miles between New York LGA and Chicago for flights purchased and flown between June 16 and August 31. United’s offer, however, is targeted at residents of Illinois, Indiana, Wisconsin, New York, Connecticut and New Jersey.
Registration is required for all these promotions.