30% off Southwest base fares with promo code ONBOARD (opens in new tab)

Southwest Airlines is currently offering 30% off base fares with promo code ONBOARD when you book by 2/26/26 and travel between 4/7/26 and 5/20/26. Note that Southwest promo codes are typically capacity controlled and blackout dates apply, so you’ll just have to check the flights you want to book to see whether the code applies to your […]