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.