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New air traffic control failure delays flights at some UK airports - Finance news and analysis from Global Banking & Finance Review
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New air traffic control failure delays flights at some UK airports

Published by Global Banking & Finance Review

Posted on September 21, 2026

3 min read

· Last updated: September 21, 2026

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Air Traffic Control Failure Causes Major Delays at UK Airports, Disrupting Flights

Widespread Flight Disruptions and Industry Reactions

LONDON, Sept 21 (Reuters) - Flights at several British airports were delayed on Monday by an air traffic control failure, Britain's air traffic control provider NATS said, less than two weeks after a separate issue halted flights across the country.

Airports Affected and Immediate Impact

Manchester, Glasgow and Belfast airports experienced delays, which NATS said were related to an issue at its Prestwick centre in Scotland, while London Gatwick and London City airports said there would be some disruption.

Government Response

British transport minister Heidi Alexander, who has been considering the future of NATS Chief Executive Martin Rolfe after repeated failures, said the problem had now been fixed and systems were resuming.

"I know this will be deeply frustrating for passengers after the previous issue," she said on X.

Airline Reactions

Ryanair's Response

Ryanair, Europe's biggest airline, said 25,000 of its passengers were facing delays as a result of Monday's issue and repeated its calls for Rolfe to resign.

easyJet and British Airways

Rival airline easyJet said it had cancelled some flights while British Airways warned its customers that they were likely to experience disruption on Monday.

Passenger Rights and Compensation

The Civil Aviation Authority said passengers were "unlikely to be entitled to compensation for delays or cancellations that were directly caused by the incident", though it said passengers should be looked after by airlines.

Technical Details and Previous Incidents

Nature of the Latest Issue

NEW ISSUE BEHIND DELAYS

NATS said that Monday's delays were caused by a connectivity issue "unrelated to the issue two weeks ago", when about 2,000 flights were cancelled owing to a software defect, affecting hundreds of thousands of people. Cancellations on Monday had reached 24 by 0858 GMT.

"Airports south of Manchester are broadly unaffected, however flights heading north and flights departing Scottish airports are currently subject to some delay," a NATS statement said.

Financial and Operational Impact

A previous outage in August 2023 cost airlines £100 million ($134 million) and caused travel chaos. EasyJet said that Monday's disruption underlined weakness in the air traffic operator's systems.

"This, once again, calls into question the resilience of NATS' systems and demonstrates the need for firm actions to prevent these repeated failures," easyJet said.

($1 = 0.7473 pounds)

(Reporting by Sam Tobin and Sarah YoungEditing by Paul Sandle, David Goodman and Toby Chopra)

Key Takeaways

  • This marks the second major NATS technical disruption within two weeks—the prior incident on September 8 was caused by a ‘millisecond’ software defect affecting hundreds of thousands of passengers (apnews.com).
  • The August 2023 failure remains the costliest, impacting over 700,000 passengers and racking up industry-wide costs estimated between £75 million and £100 million, prompting a 34‑point independent review from the CAA (caa.co.uk).
  • Airlines are calling for stronger action: Ryanair demands NATS CEO Martin Rolfe’s resignation, easyJet and BA warn of continued disruption, and the regulator reminds airlines to provide passenger support but notes direct compensation isn’t guaranteed (apnews.com).

References

Frequently Asked Questions

Which UK airports were affected by the air traffic control failure?
Manchester, Glasgow, Belfast, London Gatwick, and London City airports experienced delays and disruption.
What caused the flight delays at UK airports?
A connectivity issue at NATS' Prestwick centre in Scotland caused the delays, unrelated to a previous software defect.
Are passengers entitled to compensation for the delays?
The Civil Aviation Authority stated passengers are unlikely to be entitled to compensation for delays directly caused by the incident.
How many flights were cancelled due to the issue?
As of 0858 GMT, there had been 24 flight cancellations reported.
What response did airlines have to the NATS system failure?
Ryanair called for the NATS CEO to resign, easyJet cancelled some flights, and British Airways warned of further disruption.

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