Southwest is having another sale: Up to 30% off base fares for April and May travel
SAVE UP TO 30%: Through Feb. 26, Southwest promo code ONBOARD saves you up to 30% on select base fares for Southwest flights to the continental U.S. and inter-island HI between April 7 and May 20.
A ray of hope for the northeast U.S. population who has really had enough of the snow, thank you: Through Feb. 26, Southwest plane tickets are up to 30% off for travel this spring break season. Of course, you don't have to be flying from (or flying to) the blizzard zone to take advantage of this Southwest sale — the deal applies to the whole continental U.S. and inter-island Hawaii. Use code ONBOARD to see flight discounts for travel between April 7 and May 20, 2026.
Yes, Southwest makes you pay for bags now. But you could end up saving enough on roundtrip tickets that it ends up covering the $35 each way you would have paid for luggage. Once you plug your destination in and enter code ONBOARD, you can use Southwest's Low Fare Calendar to get an overview of daily fares for a two-month window. The lowest fares will appear crossed out with the new discounted cost. In my own personal research (Philly to Orlando or Philly to Las Vegas), I'm seeing a ton of flights for $40 off each way on multiple days of the week.