Heathrow and Gatwick cancellations mount as UK disruption drags on

Flight schedules at London’s two busiest airports remain severely disrupted after a major air traffic control outage, with more than 200 services already cancelled at Heathrow and Gatwick and knock-on delays expected to continue through Wednesday.

Ongoing fallout from UK air traffic control glitch

Published coverage indicates that a technical failure at UK air traffic control provider NATS on Tuesday triggered widespread cancellations and delays across the country’s airports. The issue, which affected the processing of flight plans, led to a ground stop for many departures and left aircraft and crews out of position overnight.

According to flight-tracking and aviation data cited in multiple outlets, more than 1,000 flights were cancelled across the UK on Tuesday alone, affecting major hubs including Heathrow, Gatwick, Manchester and Birmingham. At London’s airports, departure boards showed long lists of scrapped or heavily delayed services as airlines struggled to rework schedules and reposition aircraft. ([apnews.com](https://apnews.com/article/408a8997d9fb39508e922e09d2523884?utm_source=openai))

By early Wednesday, the fault itself had been resolved, but the impact on operations remained significant. Publicly available updates from NATS and airport operators describe a phased recovery, with airlines thinning schedules to create space for recovery flights and reduce the risk of further bottlenecks. Travellers are being urged in widely shared advisories to check the latest status of their flight before setting off for the airport. ([euronews.com](https://www.euronews.com/my-europe/2026/09/09/technical-glitch-leads-to-more-than-1000-flight-cancellations-across-uk?utm_source=openai))

More than 200 flights axed at Heathrow and Gatwick

Fresh data for Wednesday morning shows that Heathrow and Gatwick continue to bear the brunt of the disruption. Figures reported by UK and international outlets, drawing on FlightRadar and other tracking services, indicate that Heathrow alone had seen well over 200 cancellations since the start of the day, with Gatwick also recording several dozen scrapped services. ([the-independent.com](https://www.the-independent.com/bulletin/news/heathrow-t5-departures-flights-gatwick-today-b3046994.html?utm_source=openai))

One bulletin focused on London’s airports notes that by around 06:00 BST on Wednesday, Heathrow had recorded approximately 246 cancelled flights, while Gatwick passengers faced at least 30 cancellations, with further changes possible as airlines adjusted their schedules. Separate coverage centering on Heathrow and Gatwick travel on Wednesday similarly reports that more than 200 flights have already been cancelled across the two hubs. ([the-independent.com](https://www.the-independent.com/bulletin/news/heathrow-t5-departures-flights-gatwick-today-b3046994.html?utm_source=openai))

Heathrow, the UK’s busiest airport, has been particularly affected because of its dense schedule and high proportion of long-haul operations, where aircraft and crew rotations are complex and difficult to recover quickly. Gatwick, a major base for short-haul European and leisure flights, has also seen a substantial number of services scrapped or heavily delayed, with knock-on effects for holiday destinations and regional connections. ([thenationalnews.com](https://www.thenationalnews.com/news/uk/2026/09/08/hundreds-of-flights-cancelled-after-air-traffic-control-technical-issue-at-major-uk-airports/?utm_source=openai))

Knock-on delays expected to last into midweek

Although NATS has stated that normal air traffic control operations have resumed, the backlog created by Tuesday’s outage is expected to take time to clear. Aviation analysts cited in financial and broadcast reports suggest that it can take at least a full operating day, and sometimes longer, to unwind such widespread disruption because aircraft, crews and even airport stands are no longer where schedules assume they will be. ([euronews.com](https://www.euronews.com/my-europe/2026/09/09/technical-glitch-leads-to-more-than-1000-flight-cancellations-across-uk?utm_source=openai))

Some airlines have been trimming midweek schedules to create room for recovery, cancelling selected flights in advance rather than risking rolling delays. Coverage from Irish and European broadcasters notes that hundreds of thousands of passengers may face altered itineraries, overnight stays or missed connections as the system rebalances. Passengers photographed sleeping on terminal floors at Gatwick and queuing in crowded departure halls at Heathrow illustrate the scale of the disruption’s human impact. ([euronews.com](https://www.euronews.com/my-europe/2026/09/09/technical-glitch-leads-to-more-than-1000-flight-cancellations-across-uk?utm_source=openai))

Airports and airlines are continuing to advise customers to check their flight status online and to allow extra time at the airport if travel is essential. Some guidance from travel rights commentators stresses that while the initial outage is likely to be treated as an extraordinary circumstance, subsequent knock-on cancellations may be assessed differently when passengers seek refunds or compensation under UK261 rules. ([blog.wego.com](https://blog.wego.com/uk-air-traffic-control-outage/?utm_source=openai))

Passenger experience and consumer rights

Accounts shared in news reports and on social media describe passengers spending hours on aircraft waiting for clearance to depart, only to be returned to the gate and eventually offloaded. At Gatwick, one traveller bound for Ireland reportedly spent around three hours on the runway before the flight was cancelled, while others at Heathrow recounted missed long-haul connections and last-minute hotel searches. ([apnews.com](https://apnews.com/article/408a8997d9fb39508e922e09d2523884?utm_source=openai))

Consumer advice outlets are reminding travellers that UK air passenger rights legislation, known as UK261, generally entitles customers on cancelled flights to a choice between a refund or re-routing at the earliest opportunity. Entitlement to additional financial compensation depends on factors such as the cause of the disruption, the length of the delay and the notice given. Detailed explainers note that while air traffic control failures are typically classed as extraordinary events outside the airline’s control, airlines must still provide care and assistance, such as meals and accommodation, during extended waits. ([blog.wego.com](https://blog.wego.com/uk-air-traffic-control-outage/?utm_source=openai))

Travel industry commentators also highlight the importance of keeping documentation, including booking confirmations, boarding passes, receipts for food and accommodation, and any written notices from airlines. These documents can support later claims, particularly where disputes arise over whether a cancellation was directly linked to the initial technical issue or to subsequent scheduling decisions. ([blog.wego.com](https://blog.wego.com/uk-air-traffic-control-outage/?utm_source=openai))

What travellers should do now

Given the ongoing disruption at Heathrow and Gatwick, publicly available guidance from airports and airlines points to a few key steps for travellers. The consistent message across operator statements and travel advisories is to avoid going to the airport without a confirmed, operating flight and to rely on official airline apps or websites for the most current information, rather than third-party booking platforms alone. ([the-independent.com](https://www.the-independent.com/bulletin/news/heathrow-t5-departures-flights-gatwick-today-b3046994.html?utm_source=openai))

Those due to travel in the coming days are being encouraged to monitor their bookings closely, as airlines may make further short-notice adjustments to stabilise operations. Some carriers are offering flexible rebooking policies or waiving change fees for passengers willing to shift flights away from the busiest recovery windows. Travel news and airport status pages suggest that, while conditions should gradually improve, residual delays and isolated cancellations may persist even after headline flight numbers return to near-normal levels. ([euronews.com](https://www.euronews.com/my-europe/2026/09/09/technical-glitch-leads-to-more-than-1000-flight-cancellations-across-uk?utm_source=openai))

Independent: UK airport disruption continues as more than 200 flights cancelled

Euronews: Technical glitch leads to more than 1,000 flight cancellations across UK

RTÉ News: UK travellers face more disruption after technical issue

Wego Travel Blog: UK air traffic control outage and passenger rights