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Microsoft outage causes widespread airline disruptions and cancellations. Here's what to know.
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Date:2025-04-16 04:19:00
Air travel is experiencing disruptions across the globe on Friday morning due to a Microsoft outage for customers of its 365 apps, including many major airlines.
In the U.S., more than 1,300 flights had been canceled as of 10 a.m. Eastern Time, while more than 3,600 flights have been delayed, according to FlightAware, a flight tracking service.
Airlines said the outage impacted the back-end systems they use to send key data, such as weight and balance information, required for planes to depart.
Air travelers posted images on social media of long lines at ticket counters, and "blue screens of death" — the Microsoft error page when its programs aren't working — at screens at various airports. The issue was caused by a software update sent from cybersecurity firm CrowdStrike to Microsoft, and which it said it had identified in its systems and was working to resolve.
"In a nutshell, this is PR nightmare for CrowdStrike and Microsoft and others get caught in this tornado along with millions of people currently stranded at airports around the globe," Wedbush analyst Dan Ives said in a report.
Travelers in Europe are also facing disruptions, with Lufthansa, KLM and SAS Airlines reporting issues. Switzerland's largest airport, in Zurich, said planes were not being allowed to land, according to CBS News partner network BBC News.
In Australia, airline Jetstar canceled all flights from the Brisbane airport for the day, according to the BBC. One traveler in Scotland told The Guardian she paid $8,600 for new tickets back to the U.S. after her original flight was canceled due to the IT outage.
Delta Air Lines
At about 7:50 a.m. Eastern Time, Delta said it resumed some flights after an airline-wide pause earlier on Friday morning due to the Microsoft outage. Delta had canceled about 450 U.S. flights as of 10 a.m., FlightAware data shows.
"We are working to resolve the issue as quickly as possible to resume operations," Delta said in its statement.
United Airlines
United said it has been able to resume some flights, but warned customers to "expect schedule disruptions to continue throughout Friday." About 220 United flights had been canceled as of 10 a.m. ET Friday morning, although some flights left from Newark airport this morning.
The airline added, "We have issued a waiver to make it easier for customers to change their travel plans via United.com or the United app."
A third-party outage is impacting computer systems, including at United and many other organizations worldwide.
— United Airlines (@united) July 19, 2024
As we work to fully restore these systems, some flights are resuming. Many customers traveling today may experience delays.
We have issued a waiver to make it easier…
American Airlines
American said it has restarted its operations at about 5 a.m. Eastern Time. FlightAware data shows that about 300 American flights had been canceled as of roughly 10 a.m.
Earlier this morning, a technical issue with a vendor impacted multiple carriers, including American. As of 5:00 a.m. ET, we have been able to safely re-establish our operation. We apologize to our customers for the inconvenience.
— americanair (@AmericanAir) July 19, 2024
Alaska Airlines, Southwest, Frontier
Alaska Airlines told CBS News that is functioning normally. Southwest and Frontier also appear to be operating normally.
—With reporting by Kris Van Cleave.
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Aimee Picchi is the associate managing editor for CBS MoneyWatch, where she covers business and personal finance. She previously worked at Bloomberg News and has written for national news outlets including USA Today and Consumer Reports.
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