Last-minute deal alert: Get 25% off Southwest flights this week

Itching for one last summer siesta? Then take advantage of this new last-minute sale by Southwest. The airline is offering 25% off one-way and round-trip fares for select flights across the continental U.S. when you use the code 25GO. Travel must take place between now and September 4, 2022.

We aren't kidding though, about the last-minute sale. To score the discount, you must book your tickets by Aug. 28 at 11:59 p.m. CDT.

Go to the Southwest website and start searching for possible destinations and see what you find. If you click on the "book now" tab at the top where it shows the 25% off sale, the discount will be automatically applied to flights.

Want more TPG news, deals and travel advice? Sign up for our daily newsletter.

Deal basics

Airline: Southwest Airlines.
Routes: Select cities within the continental U.S.
How to book: Directly with the airline.
Travel dates: Between now and September 4, 2022.
Book by: 11:59 p.m. CDT on Aug. 28.

Related:

Sample flights

Some of the routes we found available in this sale include:

• Miami International Airport (MIA) to Austin, TX (AUS), starting at $125 each way.
• Baltimore/Washington International Thurgood Marshall Airport (BWI) to Miami International Airport (MIA), starting at $138 each way.
• Nashville, TN (BNA) to LaGuardia Airport (LGA), starting at $144 each way.
• NYC's LaGuardia Airport (LGA) to Fort Lauderdale-Hollywood International Airport (FL), starting at $232 round trip.

We used the Low Fare Calendar to find this itinerary from Los Angeles International Airport (LAX) to Harry Reid International Airport (LAS) in Las Vegas for $104 round trip. Because who doesn't enjoy a quick 3-day getaway to Vegas?

You can fly from Miami (MIA) to Austin (AUS) for $272 round trip.

How about a quick trip to the Music City? You can fly from New York City (LGA) to Nashville (BNA) for $167 round trip.

New York to The Big Easy is also available at a nice discount. Fly from NYC to Louis Armstrong New Orleans International Airport (MSY) for $230.76 round trip.

We found fares from Miami International Airport (MIA) to Ronald Reagan Washington National Airport in Washington, D.C. (DCA) available for $263 round trip.

Maximize your purchase

Don’t forget to use a card that earns bonus points on airfare purchases, such as The Platinum Card® from American Express, which earns 5 points per dollar on airfare booked directly with the airline or through American Express Travel, on up to $500,000 on these purchases per calendar year. The Citi Premier® Card and the Chase Sapphire Reserve earn 3 points per dollar on airfare, while the American Express® Gold Card earns 3 points per dollar on airfare when booked directly with the airline or through Amex Travel. Alternatively, you could use the Chase Sapphire Preferred Card which earns 2 points per dollar on travel. Check out this post for more on maximizing airfare purchases.

Bottom line

Some of these routes are a really good buy using the 25GO discount. We didn't have much success finding great deals on cross-country flights from Los Angeles to New York City, but there were many available routes to and from other great cities at a lower price.

Remember, you must book your tickets by Aug. 28 at 11:59 p.m. CDT.