A cyberattack that disrupted check-in systems at several European airports has continued into a second day, causing widespread flight delays and cancellations.
Brussels Airport was among the hardest hit, asking airlines to cancel nearly 140 departing flights scheduled for Monday as its U.S.-based software provider had not yet delivered a secure version of the check-in system.
The airport said 25 outbound flights were canceled on Saturday and 50 on Sunday, with disruptions forcing staff to resort to handwritten boarding passes and backup laptops.
The cyberattack targeted Collins Aerospace, a U.S. company whose systems handle passenger check-in, boarding passes, baggage tags, and luggage dispatch at multiple European airports.
Airports in Berlin and London also faced disruptions beginning late Friday, though most other European hubs remained unaffected.
While aviation safety and air traffic control were not impacted, the European Commission said the incident’s origins were still under investigation, with no immediate indication of whether hackers, criminal groups, or state actors were responsible.
Despite the chaos, Brussels Airport managed to operate 85% of its scheduled flights over the weekend, thanks to additional staff and the continued use of online check-in and self-bag drop facilities.
Passengers were advised to check flight statuses in advance and use alternative check-in methods as airlines and airports continued to work around the outage.
