A technical fault in the National Air Traffic Services (NATS) UK air traffic control system on September 8, 2026, caused the cancellation of more than 1,300 flights across 15 UK airports and Dublin Airport in Ireland. The disruptions continued into September 9, when over 150 additional flights were cancelled as recovery efforts proceeded.
Major Airlines Report Widespread Cancellations and Passenger Impact
British Airways cancelled or diverted over 100 flights, while Ryanair scrapped over 50 flights, affecting more than 65,000 passengers. Air India also cancelled, diverted, or delayed several flights to and from UK airports, warning that aircraft and crews being out of position could cause delays in other
services. easyJet reported delays across Europe stemming from the NATS system failure.
Operational Challenges from Aircraft and Crew Displacement
The technical fault left aircraft and crews out of position, complicating airlines’ efforts to return to normal schedules. British Airways described the incident as beyond their control and cited significant knock-on impacts due to disrupted aircraft and crew placements. NATS stated that while the technical issue had been resolved, the recovery was complex and would take time to stabilise the entire aviation network.
Passenger Delays and Terminal Congestion at Key Airports
Passengers experienced long waits both onboard aircraft and within airport terminals. At Gatwick Airport, a Ryanair passenger waited approximately three hours on the plane before
cancellation, while at Heathrow Airport, passengers on a British Airways flight to Baltimore remained on the ground for about four hours before disembarking. Heathrow temporarily suspended arrivals on September 8 but resumed departures, cautioning passengers to verify flight statuses. Other affected airports included Stansted, Luton, Manchester, Birmingham, and Edinburgh.
Official Responses and Government Scrutiny
NATS confirmed the technical problem was resolved but emphasised the ongoing complex recovery efforts. The organisation said, “Work is continuing to assist airlines and airports recover from today’s disruption. This has been a very complex recovery and has created difficulties for the whole aviation network, from which it will take time
to recover.” British Airways described the situation as “incredibly frustrating” due to aircraft and crews being out of place. Air India advised passengers to monitor flight statuses and acknowledged impacts on flights due to the fault. UK Transport Secretary Heidi Alexander said the government is seeking assurances from NATS and called for lessons to be learned to strengthen the resilience of the UK’s aviation infrastructure.
Previous NATS Failures Heighten Concerns Over Air Traffic Control Stability
This incident follows a major NATS systems failure in August 2023 that disrupted hundreds of flights and cost the industry over £100 million in compensation and refunds. There was also a significant technical disruption in
July 2025 that affected several major UK airports for over four hours. Ryanair’s Chief Operating Officer Neal McMahon called for the removal of NATS CEO Martin Rolfe and urged government action, citing repeated failures impacting UK travellers.
