A cyberattack targeting key IT systems disrupted operations at several major European airports on Friday, September 19, 2025, causing flight delays and cancellations across London, Brussels, and Berlin.
The attack compromised automated check-in and boarding systems supplied by U.S.-based technology provider Collins Aerospace, forcing airports to revert to manual processing.
The disruption led to longer queues, delayed departures, and some flight cancellations.
At London Heathrow, the United Kingdom’s busiest airport, departure delays exceeded 30 minutes as additional staff were deployed to assist passengers.
Travelers were advised to check flight statuses before arriving.
Brussels Airport reported nine flight cancellations and delays of at least an hour for 15 other flights, with only manual check-in and boarding procedures available, airport officials said.
Berlin Brandenburg Airport also confirmed technical difficulties affecting check-in and boarding, warning passengers of extended wait times.
Other European airports, including Frankfurt and Zurich, reported no disruption.
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Several airlines responded to the incident. EasyJet said the IT issue affecting a limited number of airports was not expected to affect its remaining Saturday flights.
Other carriers advised travelers to check directly with airlines and allow extra time for check-in and security procedures.
Collins Aerospace, a subsidiary of RTX, acknowledged the disruption and is working to restore full system functionality.
Authorities are investigating the cyberattack to determine its source and scope.
Travelers are urged to stay informed through official airport and airline channels as operations gradually return to normal.