: Book 3 to 4 months ahead to avoid sharp price hikes.
: To keep your funds as a flight credit, you must cancel at least 10 minutes before your scheduled departure. Fare Information and Rules | Southwest Airlines best day to buy southwest tickets
: Mark your calendar for Southwest's biggest annual sales, which typically occur in early June (Summer Sale) and October (Fall/Winter Sale). Best Days to Actually Fly : Book 3 to 4 months ahead to avoid sharp price hikes