Spring break flight deal: Save up to 30% on Southwest base fares with this code

SAVE UP TO 30%: Through February 26, Southwest promo code ONBOARD lets you save up to 30% off select base fares for Southwest flights to the continental United States and HI interisland between April 7 and May 20.

A glimmer of hope for people in the Northeastern United States who are really tired of the snow, thank you: Through February 26, Southwest plane tickets are up to 30% off for spring break travel. Of course, you don’t have to fly from (or to) the blizzard zone to take advantage of this Southwest sale — the deal applies to the entire continental United States and the entire Hawaiian Islands. Use code ON BOARD to see flight discounts for travel between April 7 and May 20, 2026.

Yes, Southwest charges you for bags now. But you might end up saving enough on round-trip tickets to cover the $35 each way you would have paid for luggage. Once you plug in your destination and enter the code ONBOARD, you can use Southwest’s low fare calendar to get an overview of daily fares for a two-month window. The lowest rates will appear crossed out with the new reduced cost. In my own personal searches (Philly to Orlando or Philly to Las Vegas), I see a ton of flights for $40 off each way many days of the week.