Technical failure at NATS cancels over 1,000 UK flights, disrupts hundreds of thousands
A major air traffic control fault on September 8 disrupted operations at Heathrow, Gatwick and other airports and left passengers facing extended delays.
More than 1,000 scheduled flights were cancelled across the United Kingdom after a major technical failure in the country’s air traffic control system on Tuesday, September 8, 2026, leaving hundreds of thousands of passengers facing delays and disrupted travel plans.
The fault affected operations at the largest UK airports, including Heathrow and Gatwick. Airlines were forced to cancel hundreds of services as controllers and operators worked to assess the scope of the problem and to restore safe flight sequencing.
Disruption continued on Wednesday, September 9, 2026, because aircraft and crew needed to be rescheduled and repositioned following the cancellations. Passengers reported long queues and uncertainty as carriers adjusted timetables.
The head of the British air traffic control service NATS issued an apology for the incident and said the cause was technical. The British transport minister has sought an explanation from NATS leadership for what happened and for the steps being taken to prevent a recurrence.
Questions about resilience after repeated outages
The outage has reopened concerns about the resilience of the UK air traffic control network. Similar major interruptions were recorded in 2023 and 2025, prompting calls from industry and lawmakers for a review of systems, redundancy and contingency planning.
Airlines and airports said they are working through a backlog of disrupted flights while regulators and NATS investigate the technical fault. Passengers affected by cancellations have been advised to check with their carriers for rebooking and refund options.
Photo: press material from the event
