Flights Grounded: Cyberattack Strikes Heathrow and Airports Across Europe — What We Know By CyberDudeBivash — updated September 20, 2025

TL;DR — quick facts A cyberattack on a third-party check-in and boarding systems provider (Collins Aerospace’s MUSE platform) caused outages that forced airports including Heathrow, Brussels and Berlin Brandenburg to switch to manual processing, producing delays and cancellations. Financial Times +1 Airlines and airports have fallen back to manual procedures; service restoration is in progress and the vendor is working with customers and authorities. AP News +1 If you’re traveling: check your airline first, expect slow check-in and baggage handling, keep receipts for expenses, and prepare for possible rebooking. (Practical checklist below.) What happened (verified timeline) Friday night → Saturday (Sep 19–20, 2025): Collins Aerospace — a major supplier of check-in/boarding systems — reported a technology disruption affecting its MUSE platform. Airports using that provider experienced failures in electronic check-in, boarding pass printing and baggage drop automa...