The latest sale from Southwest includes both domestic and international routes for travel through spring 2018.
Domestic fares are valid for nonstop travel on Mondays through Thursdays, as well as Saturdays, from November 28 through May 23. International routes are valid for nonstop travel on Mondays through Thursdays, from January 9 through March 1, and again from April 3 through May 18.
Avoid black out dates from December 22-23, 26-27, and 30-31.
Tickets must be booked by 11:59pm, November 23.
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.