Spirit's new sale features Ft. Lauderdale, Freeport, and Santo Domingo. Book tickets by 11:59 p.m. ET on Wednesday.
AirTran's sale prices are the best available for nearly every route we checked. Book tickets by Thursday night.
Southwest's new offer includes many good deals for domestic flights through October. Book tickets by Thursday, May 15.
You won't find lower fares than Spirit's for travel to Latin America. Book tickets by Wednesday, May 14.
15% Off: Alamo Rental Cars at Participating Locations
