Save on nonstop domestic flights in 2018 with the current sale from Southwest.
Fares are valid for nonstop travel on Tuesdays and Wednesdays, from January 9 through March 7. Fares to/from San Juan, Puerto Rico are valid for travel on Mondays through Thursdays, from January 16 through March 1, and again from April 3 through May 17.
Tickets must be booked by 11:59pm, December 14.
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.