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/15
Last day American AAdvantage, United Mileage Plus and Continental OnePass members can earn double EQMs on flights with their respective airlines. June 15 also marks the end of Northwest WorldPerks and Delta SkyMiles double to triple EQM promotion.

Last day Southwest Rapid Rewards members can book and fly five roundtrips or 10 one-way flights to receive A-List membership through Dec. 31, 2009.

/22
Last day Northwest WorldPerks and Delta SkyMiles members can earn up to 25,000 miles with the “Pile on the Miles” non-flight partner promotion.

/30
Last day Northwest WorldPerks members can register to earn up to 15,000 bonus miles on NWA/KLM nonstop flights between Calgary and Amsterdam. Travel must be completed by July 15, 2009.

Last day Alaska Airlines Mileage Plan members can earn double redeemable and elite qualifying miles on all Alaska Airlines and Horizon Air flights. Registration is required.

Last day United Mileage Plus members can redeem miles for upgrades without paying a co-pay fee from some fares. Effective July 1, 2009, United will charge members miles plus a $50 to $500 co-pay for upgrade awards when flying on discounted coach fares.