Southwest Airlines Cyber Monday Sale: Get up to 50% off Flights [Book by December 4]

Updated: December 1, 2025, 10:35am CST

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Southwest Cyber Monday Sale
Stack With the Southwest Companion Pass
Final Thoughts

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Southwest has just released its Cyber Monday deal, and it’s a great one, allowing you to receive 50% off base fares on select flights through the beginning of March.

Here is a look at the deal and how you can use it to save big on upcoming travel with Southwest, so long as you’re able to book in the next few days.

Southwest Cyber Monday Sale

The Southwest Cyber Monday sale allows you to get 50% off select flights when you use the promo code 50CYBER, and book your flight between December 1 and December 4, 2025, for travel between January 6 and March 4, 2026.

The deal only applies to U.S. continental flights, so flights to Hawaii and other Southwest routes in Mexico and the Caribbean are excluded.

Southwest 737 — Image Credit: Ehsan Haque

Additionally, there are some important terms to be aware of, including blackout dates and valid travel dates:

Travel blackout dates include February 12, 13, and 16, 2026.
Travel on Sundays is excluded.
Promotion code savings are applied before government taxes and fees.
You must enter promotion code 50CYBER in the Promo Code box when booking during the booking period.
Discount is valid on new reservations only.

Hot Tip:

Since Southwest Rapid Rewards uses dynamic pricing for its award flights, this promotion will score you a discount when redeeming your points as well — since the number of points you need for your award ticket is tied to the cash price of your ticket.

Stack With the Southwest Companion Pass

This promotion presents an excellent opportunity for Southwest Companion Pass holders. If you’re not already familiar, the Southwest Companion Pass allows you to bring a designated companion along on all of your Southwest flights, including both paid and award flights. You only need to pay the taxes and fees for your companion to fly with you..

With this Cyber Monday sale, you can score a 50% discount on the cost of your ticket, and then bring your companion along with you on the flight for nearly free — dramatically increasing your total savings.

Hot Tip:

If you’re not a Southwest Companion Pass holder, adding a Southwest credit card to your wallet is a great way to boost your qualifying point balance, as the welcome bonuses from these credit cards count toward the earning requirements for Companion Pass qualification.

Final Thoughts

If you’re planning travel for the new year and Southwest offers the flights you need from your local airport, do yourself a favor and check out this Cyber Monday sale. You might land a 50% discount on the flights you were planning to book anyway.

Just be sure to book your travel by December 4, 2025, and then travel between January 6 and March 4, 2026, to be eligible for the promotion.