European Airline Stocks Fall After Cyberattacks on Airports

By Cristina Gallardo

European airlines traded lower Monday after a series of cyberattacks disrupted passenger traffic in four of the region's main airports, causing dozens of flight cancellations.

The cyberattacks, which took place Friday, targeted the check-in and boarding systems at London's Heathrow airport, Berlin Brandenburg Airport, Brussels Airport and Dublin Airport.

The software was provided by Collins Aerospace, a subsidiary of the U.S. aerospace and defense manufacturer RTX, which on Monday said it was working with the affected airports on the final stages of completing the updates needed to restore its systems back to full functionality.

The airports said work was continuing to resolve and recover from the outage, amid flight delays and cancellations.

Heathrow Airport said airlines operating from there had implemented contingencies, meaning that the majority of flights were operating as normal, although check-in and boarding for some flights might take slightly longer than usual.

Brussels Airport said 40 out of 277 departing flights scheduled for Monday had been canceled, as well as 23 out of 277 arriving flights. It said online check-in and the self-bag drop were still available, while check-in at the airport was mainly being done with laptops and iPads.

"It is not clear when we will be able to switch back to the normal check-in and boarding system," a spokesperson for Brussels airport said.

International Consolidated Airlines Group--which brings together British Airways and Iberia among others--fell 1.3%, while Deutsche Lufthansa lost 1.2% and Air France-KLM dropped 0.7%.

Among the low-cost carriers, EasyJet lost 1.6%, Wizz Air fell 1.3% and Ryanair was down 1.1%. German travel operator TUI dropped 1.5%.

Neither Berlin Brandenburg Airport nor Dublin Airport immediately responded to requests for comment.

Write to Cristina Gallardo at cristina.gallardo@wsj.com

(END) Dow Jones Newswires

September 22, 2025 04:19 ET (08:19 GMT)