Last day Delta SkyMiles and Northwest WorldPerks members can earn 2,500 bonus miles for each Delta Shuttle flight segment flown between New York (LaGuardia) and Boston or Washington, D.C. Register at http://www.delta.com/shuttlebonus
Last day US Airways Dividend Miles members will earn 2,500 bonus miles for every flight between Washington D.C. and New York or Boston. Register at http://www.usairways.com/summershuttle
Last day IHG Priority Club members can stay two nights at any IHG hotel worldwide and get one free night or earn double points or miles for stays. Register at http://www.getafreenight.com – Limit of four free nights.
Last day to stay two nights at a Best Western hotel at qualifying rates to get a free night voucher equivalent to a level 3 hotel. Register at http://www.bestwestern.com/summer Book on bestwestern.com and earn 250 bonus points.
Last day to earn 1,000 bonus goldpoints plus points every night at Carlson hotels worldwide, starting with your third night. Plus, an extra 5,000-point bonus on your fifth night. No registration required.
Last day American Express Membership Rewards members can redeem points for AirTran A+ Rewards credits at a 25 percent discount. A roundtrip coach ticket is 18,000 Membership Rewards points instead of 24,000.