European airports were starting to recover on Sunday from a cyberattack affecting their check-in systems that has caused flight cancellations and huge delays for thousands of passengers over the past two days. London Heathrow and Dublin airports said they were managing passenger flows while they tried to fix the problem with the software. Please use online check-in, self-service check-in and the fast bag drop service". AdvertisementCyberattacks and tech outages have disrupted airports around the world in recent years, from Japan to Germany, as air travel increasingly relies on online, interconnected systems. The aviation sector saw a 600-percent increase in cyberattacks from 2024 to 2025, according to a report by French aerospace company Thales released in June.