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Air traffic control issue disrupts departing flights at major UK airports
Nats said engineers were working to restore normal operations as FlightRadar24 reported about 4% of UK flights were delayed or cancelled.
On Tuesday, September 8, 2026, a technical fault in the flight processing system at National Air Traffic Services disrupted nearly 1,000 flights across the United Kingdom, triggering widespread cancellations and delays at major airports.
Britain's aviation network has faced a pattern of high-profile failures in recent years; a 2023 technical fault disrupted more than 700,000 passengers, intensifying scrutiny of NATS' infrastructure resilience.
Major hubs including Heathrow, Gatwick, and Manchester reported at least 625 cancelled flights, while Ryanair Chief Operations Officer Neal McMahon called for "NATS CEO Martin Rolfe to resign" over repeated failures.
NATS implemented a system fix by late afternoon, though the organization warned recovery would "take some time" as airlines managed backlog and knock-on effects across the network.
British Transport Secretary Heidi Alexander is seeking "assurances that lessons will be learned" while the Civil Aviation Authority expects a full report to determine if further regulatory action is needed.
Nearly 1,100 flights were cancelled on Tuesday in the UK after a technical failure of air traffic control, disturbing tens of thousands of passengers at several airports, including Heathrow and Gatwick. ...