More than 227 flights were cancelled on 21 September 2026 after a technical failure at National Air Traffic Services’ (NATS) Prestwick control centre in Scotland disrupted air traffic across Scotland, Northern Ireland, and northern England. Major airports affected included Manchester, Edinburgh, and Belfast, with widespread delays and cancellations reported throughout the day.
Technical Causes of the Disruption
The 21 September outage originated from a technical problem at NATS’ Prestwick air traffic control facility. NATS confirmed this failure was unrelated to a separate systems breakdown on 8 September 2026, which was caused by a software defect involving aircraft code allocation. This earlier failure resulted in nearly
2,100 flight cancellations and a prolonged operational impact on UK airspace management.
Airline Reactions and Passenger Impact
Ryanair reported over 25,000 passengers affected by the 21 September cancellations and called for the resignation of NATS CEO Martin Rolfe. British Airways, easyJet, and Jet2 also raised serious concerns about the resilience of UK air traffic control infrastructure. British Airways had experienced almost 550 flight cancellations and more than 85,000 customers impacted during the 8 September failure. The latest disruption compounded operational challenges for airlines still recovering from that earlier outage.
Government and Regulatory Response
Transport Secretary Heidi Alexander mandated an independent review by the Civil Aviation Authority (CAA) following the
8 September incident. The second failure has intensified demands for this review to ensure aviation systems meet operational requirements. The CAA indicated that the 21 September disruption would likely be classified as “extraordinary circumstances,” which typically limits passenger entitlement to financial compensation.
Operational and Industry Consequences
The compounded disruptions caused extensive operational difficulties. Airlines faced stranded aircraft, crew hour restrictions, and lost airport slots while rebuilding flight schedules. The cancellations affected not only passenger flights but also broader travel logistics, including hotel bookings, airport transfers, tours, and onward connections. Recovery efforts remain complex and costly across the UK aviation sector.
Calls for Leadership Changes at NATS
Ryanair Chief Operating Officer
Neal McMahon demanded government intervention and leadership change at NATS, stating, “Enough is enough, it’s time for the UK government to intervene…and put somebody in charge who can do the job.” The repeated failures within two weeks have intensified scrutiny on NATS and raised urgent questions over the reliability of UK air traffic management.
