12
/15
Last day to earn bonus miles with American AAdvantage dining program when rating restaurant dining experiences; earn five bonus miles for every dollar you spend on every dine you rate.

Last day to earn triple miles starting with your second qualifying stay at any InterContinental Crowne Plaza, Hotel Indigo, Holiday Inn, Holiday Inn Express, Staybridge Suites or Candlewood Suites hotel worldwide.

/18
Last day to earn up to 1,500 United Mileage Plus bonus miles when shopping at the Mileage Plus Mall.

/31
Last day to reactivate your expired American AAdvantage miles; $50 for every 5,000 miles (or portion thereof), plus $30 processing fee.

Last day that Northwest Airlines will match all donations of WorldPerks miles to Guide Dogs of America, up to 1,000,000 total miles.

Last day that new members will be welcomed with 1,000 points for enrolling in La Quinta Rewards in conjunction with a stay.

Last day Delta SkyMiles members can earn 1,000 bonus miles when spending $20 or more at Shutterfly.com.

Last day to register for Northwest WorldPerks Mystery Miles promotion where members can earn up to 100,000 bonus miles for using WorldPerks partner services.