American is facing a lot of competition from AirTran and other airlines with this offer. Cities included in the deal are Atlanta, Boston, Miami, and New Orleans.
Northwest's sale includes some good deals for travel to Austin and San Antonio. Travel is valid in May and into June.
Santa Barbara, San Diego, and Cancun are featured in United's new deal. Book tickets by Friday, April 4.
United's China deal features Beijing and Shanghai. Departures are available from Los Angeles, Chicago, New York, and more.
