United Mileage Plus members who register by Feb. 15 and dine 10 times through March 31 will earn 5,000 bonus miles through the Mileage Plus Dining program. The meals charged must be $25 or more, including tax and tip at participating Rewards Network restaurants. You will also automatically be upgraded to Elite Dining status for the rest of 2007, which brings with it the ability to earn 10 miles per dollar spent (the norm is three miles). For complete information and to register for this promotion, visit http://www.united.com/dining

Delta SkyMiles members can earn up to 10,000 miles through the airline’s Bon Appetit promotion when registering and dining by Feb. 28. SkyMiles members will earn 1,000 bonus miles for every $100 spent in qualified dines at participating Rewards Network restaurants between Jan. 1 and March 15, 2007. The bonus miles are in addition to miles normally earned through the dining program and the maximum a member can earn during this promotion is 10,000 miles. Members normally earn three miles per dollar spent, and if you are a Dining elite member, you earn double miles (10 miles per dollar) through Dec. 31, 2007. Register at skymiles.rewardsnetwork.com/bonappetit. Be sure to check out the list of restaurants offering double miles until Dec. 31, 2007 at http://insideflyerus.wpengine.com/link/?149

American AAdvantage members can earn up to 10,000 bonus miles through the Mega Miles Bonus when registering and dining by Feb. 28, 2007. The more you spend during the promotional period, the more you can earn: spend $100 or more, earn 500 bonus miles; $150 or more, earn 1,000 miles; $250 or more, 2,000 miles; $500 or more, 5,000 miles or spend $1,000 or more to earn 10,000 bonus miles. Dining elite members continue to earn double miles for dining through Dec. 31, 2007. Register for this promotion at http://insideflyerus.wpengine.com/link/?150