On September 9, 2026, flights departing from London’s Heathrow and Gatwick airports were grounded due to a technical failure in the United Kingdom’s National Air Traffic Service (NATS) system.
Technical Cause and Recovery Efforts
The disruption stems from a malfunction within the air traffic control system managed by NATS. Engineers from NATS implemented a fix and reported that the flight system is beginning to recover, though the full restoration will require additional time. A NATS spokesman said, “We are investigating a technical issue which is causing some disruption to flight departures. Our engineers are on site and we will provide an update as soon as
we can.”
Flight Cancellations and Passenger Impact
Several airlines reported flight cancellations due to the issue. Ryanair canceled 50 scheduled flights, affecting approximately 65,000 passengers. British Airways canceled 96 flights, while easyJet canceled 92. KLM also canceled 20 flights amid the disruption. Manchester and Edinburgh airports issued warnings about potential delays resulting from the London’s air traffic control problem.
Official Statements and Passenger Guidance
Heathrow Airport confirmed that arriving flights are currently not impacted, stating, “Arriving flights are not currently impacted.” Heathrow advised passengers to verify flight times. NATS acknowledged that departing flights were grounded but said departures and the airspace are now open, emphasizing that full recovery will take
time. Britain’s transport minister, Heidi Alexander, apologized on social media for the disruption, saying, “I know this will be frustrating for passengers and I’m sorry.”
The recovery process is ongoing, with continued delays and cancellations affecting travelers at Heathrow and Gatwick airports. Passengers are experiencing extended wait times as the UK air traffic control system works through the technical failure.
Heathrow is among the world’s busiest airports, handling 84.5 million passengers in the prior year, ranking seventh globally according to Airports Council International. The airport experienced significant disruption in March 2025 after a power outage caused by a fire at
an electricity substation shut down operations, affecting over 1,300 flights and more than 200,000 passengers. The recent technical failure in the NATS system adds to the operational challenges faced by the London airspace.
