A second major air traffic control failure at National Air Traffic Services’ (NATS) Prestwick control centre in Scotland on 21 September 2026 resulted in the cancellation of 227 flights across the United Kingdom.
Airports and Regions Affected
The disruption affected airspace and airports across Scotland, Northern Ireland, and northern England. Manchester, Edinburgh, Belfast, and Heathrow airports were among those experiencing knock-on delays and cancellations due to the system fault at Prestwick.
Airlines and Passenger Impact
British Airways cancelled over 100 flights during the 21 September disruption, following the cancellation of nearly 550 flights on 8 September. Ryanair reported more than 25,000 passengers impacted by the latest failure. EasyJet
and Jet2 also raised concerns about the repeated operational interruptions and the effects on their schedules.
Comparison to Earlier September Failure
The 21 September event was distinct from the prior significant NATS air traffic control failure on 8 September 2026, which was caused by a software defect related to aircraft code allocations. That earlier failure led to nearly 2,100 flight cancellations, including about 1,750 on the first day, heavily disrupting Heathrow and affecting over 85,000 British Airways customers.
Official Responses and Review
NATS confirmed the 21 September incident was unrelated to the earlier outage and issued an unreserved apology for the disruption. The UK Civil Aviation Authority indicated this
latest failure likely constitutes “extraordinary circumstances,” limiting airlines’ liability for statutory compensation. Transport Secretary Heidi Alexander had appointed an independent Civil Aviation Authority review after the 8 September failure and is seeking assurances on improvements following this second disruption.
Compensation and Sector Reactions
Passengers affected by the 21 September cancellations are unlikely to receive compensation due to the classification of the event as extraordinary circumstances, though airlines remain obligated to provide rerouting and passenger care. Ryanair’s Chief Operating Officer Neal McMahon publicly called for the resignation of NATS Chief Executive Martin Rolfe, stating, “Enough is enough, it’s time for the UK government to intervene…and
put somebody in charge who can do the job.” Other major airlines expressed concern over the resilience of the UK’s air traffic control infrastructure.
Impact on Aviation Network Resilience
After two significant air traffic control failures within a two-week span, the UK aviation sector is under pressure to restore confidence in its network. The disruptions affected not only passenger flights but also corporate, group, sports, and event travel. Industry stakeholders are awaiting the findings of ongoing investigations to assess redundancy, technological safeguards, and contingency plans at NATS.
