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 22 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 January 19 through March 2, and again from March 29 through May 25.
Tickets must be booked by 11:59pm, December 10.
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.