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Southwest is celebrating its 48th birthday by offering one-way flights as low as $49 domestically and $87 internationally. On top of the flight sale, if you happen to be flying Southwest today, June 18, and are 21 years or older, you will receive a celebratory drink to ring in the big day. The sale fares are available from a number of domestic and international departure cities from September 4 through December 5. To see the entire list of routes on sale, click here.

Keep in mind that if you’ve already made a reservation through Southwest and see that it’s decreased in price since originally purchased, you can be refunded the difference in price. Don’t forget that Southwest award redemptions are tied to the ticket’s price, so this is a prime opportunity to use Southwest miles for a cheap trip. You can transfer Chase Ultimate Rewards points to Southwest instantly at a 1:1 ratio.

While some of these prices aren’t as dirt cheap as other airlines’ basic economy fares, keep in mind that Southwest doesn’t charge for the first two checked bags which can help keep the cost of your trip down.

If you’re in the market for a new credit card and you fly Southwest often, you may want to consider applying for the Southwest Rapid Rewards Priority® Card as it has great benefits for Southwest flyers and is currently offering a welcome bonus of 40,000 bonus points after spending $1,000 in the first three months.

Book by 11:59 pm central time, June 20, to lock in these fares for travel between September 4 and December 5. All tickets purchased during this promotion are nonrefundable.

Airlines: Southwest
Routes: Various international and domestic routes
Cost: From $49 one-way
Travel Dates: September 4 through December 5
Book By: June 20
Pay With: Southwest Rapid Rewards Priority® Card, The Platinum Card® from American Express (5x on airfare booked directly with the airline), Citi Prestige Card (5x on airfare plus excellent trip delay insurance), Citi Premier CardChase Sapphire ReserveAmerican Express® Gold Card (3x on airfare) or Chase Sapphire Preferred Card (2x on travel)
Booking Link: Southwest.com

Here are some examples of what you can book:

Atlanta (ATL) to Nashville (BNA) for $49 one-way:

Fort Lauderdale (FLL) to Grand Cayman Island (GCM) for $69 one-way:

Columbus (CMH) to Belize (BZE) for $173 one-way:

Maximize Your Purchase

Don’t forget to use a credit card that earns additional points on airfare purchases, such as The Platinum Card® from American Express (5x on flights booked directly with airlines or American Express Travel), Citi Prestige Card (5x on airfare on plus excellent trip delay insurance), Chase Sapphire ReserveAmerican Express® Gold CardCiti Premier Card (3x on airfare) or the Chase Sapphire Preferred Card (2x on all travel purchases). Check out this post for more on maximizing airfare purchases.

Featured image by Marco Garcia/The Points Guy.

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The Platinum Card® from American Express

WELCOME OFFER: 60,000 Points Terms Apply.

TPG'S BONUS VALUATION*: $1,200

CARD HIGHLIGHTS: Delta Sky Club and Centurion lounge access, $200 annual airline fee credit and up to $200 in Uber credits annually

*Bonus value is an estimated value calculated by TPG and not the card issuer. View our latest valuations here.

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More Things to Know
  • Earn 60,000 Membership Rewards® points after you use your new Card to make $5,000 in purchases in your first 3 months.
  • Enjoy Uber VIP status and free rides in the U.S. up to $15 each month, plus a bonus $20 in December. That can be up to $200 in annual Uber savings.
  • 5X Membership Rewards® points on flights booked directly with airlines or with American Express Travel.
  • 5X Membership Rewards points on prepaid hotels booked on amextravel.com.
  • Enjoy access to the Global Lounge Collection, the only credit card airport lounge access program that includes proprietary lounge locations around the world.
  • Receive complimentary benefits with an average total value of $550 with Fine Hotels & Resorts. Learn More.
  • $200 Airline Fee Credit, up to $200 per calendar year in baggage fees and more at one qualifying airline.
  • Get up to $100 in statement credits annually for purchases at Saks Fifth Avenue on your Platinum Card®. Enrollment required.
  • $550 annual fee.
  • Terms Apply.
  • See Rates & Fees
Intro APR on Purchases
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Regular APR
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Annual Fee
$550
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Recommended Credit
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