While Tuesdays are optimal for sales, securing the best price requires a combination of timing and tools:

: 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

: These are the lowest-priced fares but are non-refundable (though they can be converted to flight credits).

: Use the Southwest Low Fare Calendar to view the cheapest dates across an entire month. Booking Window : Domestic : Aim for 3 to 8 weeks in advance.