Key Points
NATS system failed September 21 at Prestwick centre in Scotland, second major failure in 13 days.
Around 200 flights cancelled or did not fly, with EasyJet losing 47 departures.
Ryanair, Wizz Air, and EasyJet demanded urgent action and CEO Martin Rolfe's resignation.
NATS blamed connectivity issue, said system was fixed and running at full capacity by afternoon.
The UK’s air traffic control system failed again on September 21, cancelling around 200 flights and delaying hundreds more across major airports. The connectivity issue at NATS’ Prestwick centre in Scotland struck just 13 days after a software glitch disrupted over 2,000 flights. Airlines including Ryanair, EasyJet, and Wizz Air are now demanding urgent action and the resignation of NATS chief Martin Rolfe.
What happened on September 21
A technical fault at the National Air Traffic Services’ Prestwick control centre in Scotland disrupted flights across northern England, Scotland, Northern Ireland, and into London on Monday morning. NATS blamed a connectivity issue in its systems network. The company said the problem was unrelated to the software glitch that struck on September 8, which had caused chaos across UK airspace.
The scale of disruption
As of 13:45 BST on September 21, aviation analytics firm Cirium reported around 200 flights were cancelled or did not fly. This included 100 arrivals and 99 departures from UK airports. EasyJet suffered the most, with 47 of its 670 scheduled departures cancelled. British Airways saw 11 cancellations from 513 scheduled departures. NATS said the system was fixed and running at full capacity by mid-afternoon.
Airlines demand accountability
Major carriers are questioning NATS’ reliability. Ryanair called for Martin Rolfe to resign, saying he failed to deliver either a reliable system or effective backup. Wizz Air UK described a confidence crisis and demanded urgent reform. EasyJet said the disruption demonstrates the need for firm actions. The ABTA, the UK travel industry trade body, asked the government to consider whether NATS should compensate the wider industry for such failures.
Pressure mounts on NATS leadership
Ryanair’s chief operations officer Neal McMahon and Reform UK deputy leader Richard Tice demanded Rolfe’s immediate resignation. They called on Transport Secretary Heidi Alexander to dismiss him if he refused to step down. The timing is critical: NATS had published a report days before the September 8 failure claiming a repeat incident was unlikely. This second failure in 13 days directly contradicts that assessment.
Final Thoughts
Two major NATS failures in two weeks have shattered airline confidence in UK air traffic control. With 200 flights cancelled on September 21 alone and industry leaders calling for the CEO’s resignation, the pressure on the government to act is now intense. The cost to airlines is mounting into millions of pounds.
FAQs
Around 200 flights were cancelled or did not fly as of 13:45 BST, including 100 arrivals and 99 departures from UK airports.
NATS blamed a connectivity issue in its systems network at the Prestwick control centre in Scotland. The company said it was unrelated to the September 8 software glitch.
Ryanair and other carriers say Rolfe failed to deliver a reliable system or effective backup after the September 8 failure, and now a second major disruption has occurred in 13 days.
EasyJet was hit hardest, with 47 of its 670 scheduled UK departures cancelled on September 21.
Disclaimer:
The content shared by Meyka AI PTY LTD is solely for research and informational purposes. Meyka is not a financial advisory service, and the information provided should not be considered investment or trading advice.
About Author

Huzaifa Zahoor
Co FounderHuzaifa Zahoor is the engineer who built Meyka. He has spent years writing Python, training AI models, and building data pipelines specifically for financial markets. His technical articles have reached over 30,000 readers on Medium, so he knows how to make complex things easy to follow. If this article touches on how the tools work, he is the person who actually built them.
What brings you to Meyka?
Pick what interests you most and we will get you started.
I'm here to read news
Find more articles like this one
I'm here to research stocks
Ask Meyka Analyst about any stock
I'm here to track my Portfolio
Get daily updates and alerts (coming March 2026)