UK air traffic control glitch forces over 1,000 flight cancellations
A major technical fault within the UK's air traffic control network grounded nearly 2,000 flights, stranding tens of thousands of passengers and sparking intense criticism of NATS leadership.
Tens of thousands of passengers faced severe disruption across British aviation after a technical fault in the country's air traffic control network triggered widespread cancellations and delays. The failure at the National Air Traffic Services brought widespread chaos to air travel on Tuesday, September 8, 2026, grounding flights and stranding travellers at major hubs. While officials declared the underlying system issue resolved, carriers warned that clearing the backlog and repositioning displaced crews and aircraft would take days.
The trouble began on Tuesday, September 8, 2026, when NATS experienced a failure in its flight data processing system. According to Flightradar24, the initial outage resulted in approximately 1,300 flight cancellations to and from UK airports on Tuesday alone. Aviation analytics firm Cirium estimated the broader two-day toll at nearly 2,000 cancellations, including further reductions on Wednesday, September 9, 2026, as airports scrambled to recover.
Media additions
Departures from Heathrow Airport were temporarily suspended around lunchtime on Tuesday, September 8, 2026. Although departures resumed later in the day, the airport rapidly ran out of physical space for incoming aircraft because planes were unable to leave the ground. Consequently, Heathrow suspended arrivals for the remainder of Tuesday, September 8, 2026, forcing numerous flights to be diverted to alternative domestic and European sites.
Other major hubs, including Gatwick, Manchester, Birmingham, and Edinburgh, reported heavy disruption. Passengers shared accounts of being trapped on stationary aircraft for hours. Healthcare worker Josie Donoghue described her experience leaving Gatwick after abandoning a flight to Ireland:
"Getting through that airport was like trying to get out of Alcatraz."
Josie Donoghue, Passenger, via Press Association
According to reports from the Press Association, Josie Donoghue also described the scene at the airport as an absolute nightmare. Airlines sustained heavy operational blows. Ryanair reported that more than 65,000 of its customers experienced delays, with over 50 flights axed on Tuesday, September 8, 2026, and total cancellations reaching 250 according to its chief operations officer. British Airways cancelled or diverted more than 100 flights, while EasyJet pulled 200 flights across its network. The disruption even affected elite sport: the Arsenal football team was forced to cancel a pre-match press conference in Naples after their flight was delayed.
| Airline / Provider | Reported Impact |
|---|---|
| Ryanair | Over 65,000 passengers disrupted; 250 flights cancelled |
| British Airways | More than 100 flights cancelled or diverted |
| EasyJet | 200 cancellations reported across network |
The incident immediately reignited fierce industry criticism of NATS leadership. Ryanair Chief Operations Officer Neal McMahon drew comparisons to the severe August 2023 computer shutdown that affected 700,000 passengers, asserting that the failure on Tuesday, September 8, 2026, stemmed from a similar spurious flight plan loop that backup systems failed to mitigate. McMahon renewed calls for NATS chief executive Martin Rolfe to step down, stating that the government must intervene.
In response to the criticism, Martin Rolfe accepted full responsibility for the disruption while ruling out any cyber security breach. Rolfe defended the overall safety and quality of the British air traffic network, telling reporters that investigations into the exact root cause remained ongoing.
Political figures voiced sharp disapproval over the recurring vulnerabilities in British airspace. Foreign Secretary Ed Miliband criticised the situation. Transport Secretary Heidi Alexander posted on social media that she was seeking assurances that lessons will be learned and systems that support aviation are up to the job,
subsequently summoning Rolfe to a direct meeting ahead of her address to the House of Commons on Wednesday, September 9, 2026.
The UK Civil Aviation Authority confirmed it expects NATS to deliver a full report detailing the failure, which will be evaluated to determine whether further regulatory enforcement or structural reforms are required to safeguard aviation reliability.
What to watch next
- Passengers holding tickets for UK departures are advised to verify flight statuses directly with their airlines before travelling to airports.
- Transport Secretary Heidi Alexander is scheduled to address MPs in the House of Commons regarding the regulatory response and upcoming safety reviews.
- The Civil Aviation Authority will review the forthcoming formal incident report from NATS to decide on potential remedial mandates.
