Purchase from February 28 through March 2, 2023, 11:59 p.m. Pacific Time.
21-day advance purchase required.
Continental U.S. travel valid March 21 through May 17, 2023. Travel continental U.S. to/from Hawaii valid April 11 through May 17, 2023. Interisland Hawaii travel valid March 21 through May 17, 2023. Travel to/from San Juan, Puerto Rico valid April 11 through May 17, 2023. International travel valid April 11 through May 17, 2023.
Except as otherwise specified, travel is valid Tuesdays and Wednesdays.
Fares valid on nonstop service where indicated; if not indicated, fares are valid on single connecting service.
Check your destination HERE.
Example from Honolulu:

Screenshot from Southwest.com made on Feb 28, 2023