[Expired] Southwest Airlines Sale Offering up to a 50% Discount [Book by July 10]

Updated: July 12, 2025, 7:18am CDT

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Table of Contents

Southwest Sale Details
Recap on Recent Southwest Changes
Final Thoughts

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Update:

The offer mentioned below has expired and is no longer available.

Southwest Airlines is offering flights for as much as half off — yes, a 50% discount — when you book your tickets by July 10, 2025. You’ll need a promo code to unlock this discount, and the promotion promises “millions of seats on sale.”

With this offer, you can travel throughout late summer into the middle of December — though eligible dates vary by destination. Here’s everything you need to know about Southwest’s latest promotion.

Southwest Sale Details

This sale offers fares for up to 50% off on many Southwest flights! You’ll need the promo code BIGDEAL, and you must book by July 10 at 11:59 p.m. PT. The full terms are on the promotion’s landing page. This sale applies to both Basic and Wanna Get Away Plus fares.

Be aware that the eligible travel dates vary by destination, and the sale only applies to flights booked directly with Southwest. Seats, days, and markets are limited, so make sure to check the full terms and conditions when booking.

Eligible travel dates are as follows:

Continental U.S.
- Travel August 4-December 17, 2025
- Blackout dates November 21-26 and November 28-December 1, 2025
To Hawaii, Puerto Rico, and international destinations from the continental U.S.
- Travel August 17-December 11, 2025
- Blackout dates August 28-September 2 and November 20-24, 2025
From Hawaii, Puerto Rico, and international destinations to the continental U.S.
- Travel August 17-December 11, 2025
- Blackout dates August 28-September 2 and November 28-December 2, 2025
Interisland Hawaii flights
- Travel July 29-October 1, 2025
- Blackout dates August 28-September 2, 2025

Sample Fares

Here’s an example of a discounted ticket from Chicago Midway (MDW) to St. Louis (STL) that you can book for just $30.38 in Basic and $46 for Wanna Get Away Plus:

Southwest BIGDEAL fare MDW STL — Image Credit: Southwest

Remember, Southwest has an easy-to-use Low Fare Calendar to help you find the cheapest dates when your travel plans are flexible.

Since Southwest Rapid Rewards is a revenue-based program, sales also apply to flights booked using points. Unfortunately, you won’t get outsized value: expect to get around 1.1 to 1.5 cents per point from your Rapid Rewards points.

Southwest BIGDEAL points booking MDW STL — Book these flights starting at 2,000 points per person! Image Credit: Southwest

If you use one of Southwest’s co-branded credit cards to pay for your tickets, you could earn 2 to 4 Rapid Rewards points per $1 spent on your Southwest purchases. These cards also have other perks like anniversary bonus points every cardmember year, EarlyBird Check-In certificates, and more.

Hot Tip:

This sale doesn’t apply to existing bookings, so if you find your same flight is now available at a lower price, you can book it and cancel your existing reservation. Here’s how to change or cancel a Southwest flight.

Recap on Recent Southwest Changes

Remember that Southwest recently introduced basic fares (to replace the previous Wanna Get Away) and ended its popular “everyone gets 2 free checked bags” policy on May 28, 2025. Now, the number of free checked bags you’ll get, if any, depends on what credit cards you hold and whether you have elite status with Southwest Airlines.

Final Thoughts

Southwest has a flash sale advertising 50% off round-trip and one-way bookings, and we found flights for just over $30 per person one-way. If you book by July 10, you might be able to find a nice discount on your late summer, fall, or early winter travel plans.

Remember that the cheapest fares now book into Southwest’s Basic fare type, and the airline is applying its new baggage policy to all bookings made after May 28, 2025. That means you will not qualify for free checked bags when booking the cheapest tickets, and that’s worth considering as you look at ticket prices.