Southwest has lowered fares on both domestic and international routes for winter/spring travel. 

Domestic fares are valid for travel on Tuesdays, Wednesdays, and Saturdays, from December 1 through May 25.

International fares are valid for travel from January 11 through March 3, and again from March 29 through May 25.

Travel to/from San Juan is valid Mondays through Thursdays, from December 2 through December 10, and again from January 19 through March 2.

Tickets must be booked by 11:59pm, December 3.

Please note, these fares are only available on Southwest.com. Other carriers regularly match these sale fares, so be sure to compare to find the best deal.

Fares include:

New York to Houston $278 round-trip

New York to Kansas City $228 round-trip

New York to Atlanta $262 round-trip

Newark to Austin $188 round-trip

Baltimore to Atlanta $234 round-trip

Boston to Atlanta $262 round-trip

Orlando to Indianapolis $218 round-trip

Orlando to Newark $234 round-trip

Philadelphia to Ft Lauderdale $198 round-trip

San Juan to Ft Lauderdale $230 round-trip

Tampa to Philadelphia $198 round-trip

Pittsburgh to Orlando $218 round-trip

Washington DC to Atlanta $198 round-trip

Las Vegas to Austin $276 round-trip

New Orleans to Las Vegas $346 round-trip

San Antonio to Las Vegas $276 round-trip

Los Angeles to Kansas City $332 round-trip

Los Angeles to Denver $188 round-trip

Seattle to Phoenix $256 round-trip

Seattle to San Diego $228 round-trip

San Francisco to San Diego $152 round-trip

Indianapolis to Boston $158 round-trip

Nashville to New York $236 round-trip

Raleigh-Durham to Ft Lauderdale $224 round-trip

Tampa to Washington DC $178 round-trip

Chicago to Columbus $186 round-trip

Chicago to Boston $224 round-trip

Chicago to New York $218 round-trip