Southwest Airlines: Select US Flights 40% Off Base Fare (Travel October 5 - March 3, 2027)
at Southwest Airlines
Southwest Week of WOW: up to 40% off base fares on flights booked Sept 14–17 for travel Oct 5–Mar 3, 2027.
Southwest Airlines Week of WOW sale offers up to 40% off base fares for flights across the U.S., Hawaii, Puerto Rico, St. Thomas, and international destinations. No promo code needed—discounts are automatically applied at checkout. Booking window: September 14–17, 2026 Travel window: October 5, 2026–March 3, 2027 Key details: - Discount applies to one-way and round-trip fares booked on Southwest.com or swabiz.com - Savings applied before taxes and fees - Continental U.S. travel valid Monday–Saturday - Hawaii/St. Thomas/international travel from continental U.S. valid Sunday–Wednesday - Return travel from Hawaii/St. Thomas/international valid Tuesday–Friday - Puerto Rico travel valid Monday–Thursday - Blackout dates apply during peak travel periods (holidays, Thanksgiving, winter break, Valentine's Day) - Limited seats and markets; availability varies by destination and day - Interisland Hawaii travel excluded
FAQ
When can I book this sale?
Booking period is September 14–17, 2026 at 12:01 a.m. PT through 11:59 p.m. PT.
When can I travel with the discount?
Travel must occur between October 5, 2026 and March 3, 2027. Blackout dates apply during holidays and peak travel periods.
Do I need a promo code?
No, the discount is automatically applied and shown as a strikethrough on eligible flights during checkout.
Are there restrictions on which days I can fly?
Yes. Continental U.S. flights are valid Monday–Saturday. Hawaii/St. Thomas/international routes have specific day restrictions depending on direction of travel.
