Southwest Airlines Grounds Flights Nationwide Due to Technical Issues

Image: Southwest Airlines Boeing 737 on a taxiway. (photo via Southwest Airlines Media)
Image: Southwest Airlines Boeing 737 on a taxiway. (photo via Southwest Airlines Media)
Laurie Baratti
by Laurie Baratti
Last updated: 6:09 PM ET, Tue June 15, 2021

This afternoon, Southwest Airlines announced via Twitter that it's "in the process of resuming normal operations" following a nationwide computer outage that forced the airline to ground flights around the country for the second time in less than 24 hours.

This afternoon's flight disruptions followed a similar suspension of Southwest departures that occurred on Monday night, due to "intermittent performance issues" with a third-party weather data provider. At that time, the airline told Fox Business that the technical glitch had prevented the "transmission of weather information that is required to safely operate our aircraft."

"While the vendor worked to restore connectivity, we implemented a ground stop to protect the safety of our crews and customers," the carrier explained in a statement. While Monday night's weather system errors were reportedly resolved and operations restored, another technical issue arose this afternoon that forced the airline to temporarily ground planes around the U.S. yet again.

Tuesday afternoon, The Federal Aviation Administration (FAA) confirmed that it had, "issued a temporary nationwide ground stop at the request of Southwest Airlines while the company resolved a reservation computer issue."

According to CNN, Delta Air Lines and Alaska Airlines had likewise reported technical systems issues that were affecting their reservations systems the day before. Delta told the outlet that it was working to resolve a technical issue that was preventing customers from purchasing tickets on its app, website and through the Reservation Call Center.

Alaska Airlines also posted on its booking page Monday, "We are currently experiencing issues that affect shopping at alaskaair.com, our mobile app and through our contact center. We are actively working with our partner that powers our shopping platform to resolve the issue. We apologize for the inconvenience. Please try again later."

Southwest told CNN Travel that it had been forced to cancel roughly 500 flights, and aviation tracking website FlightAware showed 966 delays across Southwest's network, estimating that cancellations and delays combined had affected 42 percent of the airline's Tuesday schedule.

Thousands of customers affected by the flight delays and cancellations frustratedly took to the Twittersphere with questions and complaints, some already aboard planes who waited for hours to take off, others in the airport waiting out lengthy delays and others headed to local hotels after their flights were canceled.

Southwest said that it's, "in the process of investigating the root cause of each event to determine the reason behind the technology issue."


For the latest travel news, updates and deals, subscribe to the daily TravelPulse newsletter.

Topics From This Article to Explore

More From TravelPulse

Laurie Baratti

Laurie Baratti

Assistant Editor

Laurie Baratti is an Assistant Editor for TravelPulse. She is a San Diego-based journalist whose work has previously appeared in publications like TravelAge West, SPACE, Modern Home + Living, Montage, and Sandals Life magazines. Travel writing has long been her passion, and she is always looking for excuses to explore the world outside of her native California. Laurie is also a lifelong equestrian, a proud pet-parent, and an underground advocate of the Oxford comma.

Grow Your Travel Business With Certified Courses

Travel Agent Academy
Travel Agent Academy
Majestic Resorts Specialist ProgramDiscover all-inclusive luxury at Majestic Resorts in paradise.
Travel Agent Academy
Travel Agent Academy
Los Cabos Specialist ProgramSell the magic of Los Cabos: luxury, adventure, and endless sunshine.
Travel Agent Academy
Travel Agent Academy
Allianz Specialist ProgramProtect every journey with Allianz Partners Travel Insurance.
Travel Agent Academy
Travel Agent Academy
Majestic Resorts Specialist ProgramDiscover all-inclusive luxury at Majestic Resorts in paradise.
Travel Agent Academy
Travel Agent Academy
Los Cabos Specialist ProgramSell the magic of Los Cabos: luxury, adventure, and endless sunshine.
Travel Agent Academy
Travel Agent Academy
Allianz Specialist ProgramProtect every journey with Allianz Partners Travel Insurance.

Don't Miss These Travel Agent Events and Trainings

Upcoming Webinar
Fiesta Americana Travelty Collection, What Advisors Need to KnowThursday, August 6, 2026
2:00pm Eastern
Stay ahead with the latest updates from Fiesta Americana Travelty Collection, featuring upscale...
Upcoming Webinar
Experiential and Adventure WebinarTuesday, August 11, 2026
2:00pm Eastern
Join Travel Weekly, TravelAge West, and TravelPulse in the virtual studios on August 11 for the...
Upcoming Webinar
New Orleans: Timeless Traditions & Nonstop CultureThursday, August 13, 2026
2:00pm Eastern
Learn about New Orleans from the New Orleans experts. During the presentation, you'll hear about...
Upcoming Webinar
Fiesta Americana Travelty Collection, What Advisors Need to KnowThursday, August 6, 2026
2:00pm Eastern
Stay ahead with the latest updates from Fiesta Americana Travelty Collection, featuring upscale...
Upcoming Webinar
Experiential and Adventure WebinarTuesday, August 11, 2026
2:00pm Eastern
Join Travel Weekly, TravelAge West, and TravelPulse in the virtual studios on August 11 for the...
Upcoming Webinar
New Orleans: Timeless Traditions & Nonstop CultureThursday, August 13, 2026
2:00pm Eastern
Learn about New Orleans from the New Orleans experts. During the presentation, you'll hear about...