Our friends Michael and Lisa are getting married in Argentina, this September. Michelle and I are trying to rack up our Delta SkyMiles for a free trip. Here are two frequent flyer specials that I came across:

Delta Airlines
Delta SkyMiles American Express cardholders can earn double miles on all purchases between March 15 and April 15. You must register your card in order to earn miles. For more information or to register, visit American Express' website.

United Airlines College Plus Program
It being Sping Break, college students should know about United Airlines College Plus Program. Students who travel during academic breaks can not only earn miles toward a free trip, they can receive 10,000 miles for free upon graduation. For more details, go to United's College Plus site.