Southwest Airlines operations return to normal after tech issue grounded flights nationwide

Southwest Airlines passengers were stuck for hours at airports across the country Monday due to technical issues that have since been resolved.

“We’ve resumed normal flight operations after our third-party weather data provider experienced intermittent performance issues Monday evening preventing transmission of weather information that is required to safely operate our aircraft,” Southwest spokesperson Dan Landson said in a statement to USA TODAY. “While Southwest Teams and the vendor worked to restore connectivity, we implemented a ground stop to protect the Safety of our Crews and Customers.”

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As of 8:30 a.m. EDT Tuesday, flight-tracking website FlightAware.com showed that Southwest had 50 delays and just under 130 delays nationwide. On Monday, it had over 1,450 delays.

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People began posting on social media on Monday evening that their flights were grounded, with some reporting that they were told it was due to issues with the electronic system used to monitor the weather. 

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At Phoenix Sky Harbor International Airport, Air Service Development Manager Alexandria “Lexie” Pierce confirmed at least six Southwest flights were canceled and every flight scheduled after 7 p.m. PDT was delayed.

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Denver International Airport tweeted around 8:45 p.m. that “Southwest Airlines is experiencing computer issues which is resulting in flight departure and arrival delays.”

People posted that they were also stuck in Dallas Fort Worth International Airport, Southwest Florida International Airport, Chicago O’Hare International Airport and more. 

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Flights resume after delays

Passenger Patrick C Miller posted that he was at Phoenix Sky Harbor and a pilot told the crowd the airline’s server in Dallas, as well as its backup server, were unavailable. Miller told The Arizona Republic that, after being stuck for hours, he was back in the air before 9 p.m.

The scene at C concourse of PHX. Gate agent just said all computers are down. Not sure if that means even the gate agents and customer service reps. I’m in line to ask and find out. pic.twitter.com/iuHEgRE6yh

“Most of the anxiety was coming from various forms of miscommunication and speculation vs. actual news from the source. I heard everything from total system outage, to hackers to Russians while I was listening to all of the other passengers,” Miller said via Twitter DM.

“We appreciate our Customers’ patience as we work to get them to their destinations as quickly as possible,” Southwest’s Landson told USA TODAY. “We ask that Customers use Southwest.com to check flight status or consult a Southwest Airlines Customer Service Agent for assistance with travel needs.”

  • Slide 1 of 17: When Southwest started in 1971, it flew just two routes: Dallas-San Antonio and Dallas-Houston. That's not the only thing that was different back then: The flight attendants wore hot pants and go-go boots. Click ahead for more photos from the airline's history.

  • Slide 2 of 17: Southwest Airlines co-founder Herb Kelleher at the launch of the airline's Boeing 737-300s in 1984.

  • Slide 3 of 17: A Boeing 737-300 aircraft in Southwest Airlines' historic colors.

  • Slide 4 of 17: Southwest planes at one time featured lounge-style seating, with passengers facing each other.

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  • Slide 5 of 17: In 1992, Southwest co-founder Herb Kelleher famously arm-wrestled Kurt Herwald, the chairman of Stevens Aviation, for the the rights to the phrase "Plane Smart.'' Kelleher lost.

  • Slide 6 of 17: Southwest Airlines flight attendant uniforms in the 1990s.

  • Slide 7 of 17: Southwest's planes got a new look when the airline turned 30 in 2001.

  • Slide 8 of 17: Kelleher kissed the Liberty Bell to mark Southwest's new flights to and from Philadelphia in 2005.

  • Slide 9 of 17: Southwest had Shamu planes to celebrate its partnership with SeaWorld.

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  • Slide 10 of 17: Southwest featured baggage handlers in its Bags Fly Free advertisements.

  • Slide 11 of 17: Southwest announced its acquisition of AirTran Airways in 2010.

  • Slide 12 of 17: Boeing unveiled Southwest Airlines' first 737-800 in 2012.

  • Slide 13 of 17: The company's latest look features a heart on the belly of the plane.

  • Slide 14 of 17: Southwest Airlines added the Boeing 737 Max 8 to its fleet in 2017.

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  • Slide 15 of 17: Southwest Airlines' website paid tribute to co-founder Herb Kelleher on Friday, Jan. 4, 2019. Kelleher died Jan. 3 at age 87.

  • Slide 16 of 17: Southwest Airlines debuted service to Hawaii in March 2019.

  • Slide 17 of 17: Baggage is loaded onto a Southwest Airlines plane Wednesday, August 12, 2020 at Mitchell Airport. in Milwaukee, Wis. The COVID-19 pandemic severely affected multiple airline companies and the travel industry as a whole.

Contributing: Eve Chen, USA TODAY

This article originally appeared on Arizona Republic: Southwest Airlines operations return to normal after tech issue grounded flights nationwide

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