The latest sale from Southwest Airlines features one-way tickets as low as $39 or $78 roundtrip on interisland Hawaii flights. Mainland domestic flights are as low as $98 roundtrip and there are several international flights on sale as well.

Thousands of routes are seeing discounts, so something is bound to catch your eye to get you up in the sky.

Also, check out Southwest's new nonstop flights from San Diego to Hawaii as part of its latest schedule extension! Cheap flights to Hawaii are available from several U.S. cities.

Travel Availability

  • Travel Period: Now through March 4, 2020, with a 14-day advance purchase for continental U.S. travel.
  • Travel Days of the Week: Tuesdays, Wednesdays, and Saturdays for most routes; Travel days vary on specific routes, as stated below.
  • Blackout Dates: November 22, 24, 26-27, November 30 - December 2, 19-23, December 26, 2019 - January 1, and January 4-5, 2020; Other markets have different blackout dates listed below.

Departures to Las Vegas and select Florida airports are available Sunday through Wednesday; Travel from Las Vegas and certain cities in Florida is valid Tuesday through Friday.

Routes outside the continental U.S. require a 21-day advance purchase. Interisland Hawaiian fares are valid for travel on Tuesdays and Wednesdays, with blackout dates from November 22 - December 2, and December 19, 2019 - January 6, 2020. Fares to/from San Juan, Puerto Rico are valid Mondays through Thursdays, through December 5, 2019, and January 13 - March 5, 2020.

International travel is valid through December 11, 2019, and January 7 - March 5, 2020. Travel to Mexico is valid Sundays through Wednesdays; Travel from Mexico is valid Tuesdays through Fridays. All other international travel is valid Mondays through Thursdays.

Related: The Complete List of Southwest Airlines International Destinations

Some routes may be seasonal or begin service in 2020. A few markets only have nonstop flights on limited days of the week.

*Note: Southwest isn't advertising these fares for Monday and Thursday travel, but we've found tickets available on these days of the week for many of the advertised nonstop routes within the continental U.S.

Sale Period

Tickets must be purchased by Thursday, October 31, 2019, at 11:59 pm PDT.

Sample Sale Fares

Please note, these fares are only available on Other carriers regularly match these sale fares, so be sure to compare to find the best deal.

Domestic Flights

All fares also work in the reverse direction.

Honolulu to Hilo $78 roundtrip, nonstop

Honolulu to Lihue $78 roundtrip, nonstop

Nashville to Atlanta $98 roundtrip, nonstop

San Diego to San Jose $98 roundtrip, nonstop

San Francisco to Burbank $108 roundtrip, nonstop

Jacksonville to Ft. Lauderdale $118 roundtrip, nonstop

Phoenix to El Paso $128 roundtrip, nonstop

Baltimore to Boston $138 roundtrip, nonstop

Oakland to Seattle $154 roundtrip, nonstop

Columbus to Washington D.C. $168 roundtrip, nonstop

Dallas to Austin $176 roundtrip, nonstop

New York to Chicago $180 roundtrip, nonstop

Los Angeles to Salt Lake City $186 roundtrip, nonstop

Sacramento to Phoenix $198 roundtrip, nonstop

Baltimore to Cleveland $204 roundtrip, nonstop

Albuquerque to Las Vegas $204 roundtrip, nonstop

Chicago to Norfolk $210 roundtrip, nonstop

Atlanta to Detroit $206 roundtrip

Long Island-Islip to Orlando $216 roundtrip, nonstop

Kansas City to Chicago $218 roundtrip, nonstop

Boise to Las Vegas $221 roundtrip, nonstop

Long Beach to San Antonio $294 roundtrip

Pittsburgh to Houston $298 roundtrip, nonstop

St. Louis to New York $296 roundtrip, nonstop

Washington D.C. to Kansas City $310 roundtrip, nonstop

Indianapolis to Phoenix $342 roundtrip, nonstop

Buffalo to Dallas $352 roundtrip

Denver to Richmond $356 roundtrip

Charleston to Oakland $386 roundtrip

For nonstop continental U.S. travel, the advertised sale fares are $10 more, but we found actual roundtrip fares to be at least $10 less than advertised. Some routes may have even lower unadvertised fares.

International Flights

Ft. Lauderdale to Providenciales, Turks and Caicos $235 roundtrip, nonstop

Ft. Lauderdale to Grand Cayman $247 roundtrip, nonstop

Ft. Lauderdale to Havana $257 roundtrip, nonstop

Ft. Lauderdale to San Jose, Costa Rica $349 roundtrip, nonstop

Tampa to Providenciales, Turks and Caicos $348 roundtrip

Orlando to Belize $354 roundtrip

San Juan to Cancun, Mexico $366 roundtrip

New Orleans to Havana, Cuba $380 roundtrip

Denver to Los Cabos, Mexico $417 roundtrip, nonstop

St. Louis to Nassau, Bahamas $449 roundtrip

Milwaukee to Puerto Vallarta, Mexico $454 roundtrip

Oklahoma City to Los Cabos, Mexico $455 roundtrip

Baltimore to Montego Bay $461 roundtrip, nonstop

Dallas to Liberia, Costa Rica $496 roundtrip

These are the advertised sale fares. Many routes have lower unadvertised fares available.

Related: How to Fly Southwest Airlines (And Get the Seat You Want)


Sale fares include a carry-on bag, a personal item, and two free checked bags up to 50lbs/23kg each.

Seat Assignments

Southwest has an open seating policy, which means there are no assigned seats, and you'll get to choose your place during boarding. The order of boarding is determined by the time of check-in, so check-in exactly 24 hours before departure or pay for priority boarding for a better choice of seat.

Example Booking

Searching Southwest's website, I found seats departing Oakland OAK on Thursday, December 19, returning from Seattle on Wednesday, December 25, 2019, for $154 roundtrip.

Stay on top of breaking sales, fare drops, and more! Follow us on Twitter at @Airfarewatchdog. And make sure to sign up for FREE alerts to be notified when prices drop.

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