Southwest Outage Delays Over 1,500 Flights

Simple Flying reports that Southwest Airlines suffered a nationwide computer systems outage on Friday, Oct. 9. The problems started around 8:00 a.m. ET and affected check-in, boarding, and baggage processing. Airport employees had to work manually. Southwest restored systems just after 10:15 a.m. ET, but by then more than 900 flights were delayed and 43 canceled. The ripple effect continued: by 5:00 p.m. ET, FlightAware showed over 1,500 delays, roughly a third of the airline's flights that day.

The outage is the latest in a series of technology failures. Simple Flying notes similar incidents in July 2016, June 2021, and April 2023. The worst came in December 2022 when Winter Storm Elliott overwhelmed Southwest's crew scheduling, canceling 16,900 flights and stranding two million passengers. The DOT assessed a $140 million penalty in December 2023. Southwest has since invested more than $1 billion in operational improvements, including a cloud migration with Amazon Web Services. Yet Friday's problem came from an outside vendor. Amadeus, which has provided Southwest's passenger-service system since 2017, blamed an unnamed third-party provider.

"We apologize for any inconvenience caused to Southwest Airlines passengers this morning," Amadeus said.

For travelers, the outage shows why checking flight status before heading to the airport is essential, even after systems are reported restored. Delays can cascade all day.

• airline technology
• Amadeus
• flight delays
• Southwest Airlines
• system outage
• travel disruption