A cyber-attack on Collins Aerospace check-in software has caused significant disruption at major European airports since Friday night, with delays and cancellations at Heathrow, Brussels, Berlin, and Dublin continuing into Sunday and expected to persist on Monday.
Brussels Airport asked airlines to cancel half of Monday's departing flights, citing the inability to deliver a new secure version of the check-in system. The airport had already cancelled 25 departures on Saturday and 50 on Sunday to avoid long queues.
At Heathrow, over 90% of more than 350 flights were delayed by 15 minutes or more by Sunday afternoon, with an average delay of 34 minutes. However, the airport expects most flights to operate on Monday and has not mandated further cancellations.
Berlin Airport reported delays on 73% of its roughly 200 flights, while Dublin Airport also experienced widespread delays. The UK's National Cyber Security Centre is working with Collins Aerospace, airports, and law enforcement to assess the impact.
Collins Aerospace, owned by defence conglomerate RTX, said it is actively working to restore full functionality. The incident adds to a series of cyber-attacks affecting UK companies, including Jaguar Land Rover and retailers Marks & Spencer and the Co-op.
