You can book a flight on Southwest for just $49

If you’re looking to book a trip for late 2025 or early 2026, Southwest is running a sale you won’t want to miss.

Southwest’s Sweater Weather Sale is on, and during this sale, travelers can book one-way flights for as little as $49 — but only for a limited time.

Southwest Sweater Weather Sale $49

Book your flight for just $49 now through August 21. Book at Southwest

Running now through Thursday, August 21 at 11:59 p.m. PT , this sale is good for continental U.S. travel (as well as continental U.S. travel to and from Hawaii, Puerto Rico and International locations) between September 9, 2025 and March 4, 2026. For interisland travel in Hawaii, travel dates are between September 9, 2025 and November 1, 2025.

Seats, travel days and markets are limited, and fares are valid on nons