On September 8, 2026, a technical failure in the UK’s National Air Traffic Services (NATS) system disrupted flight operations at London Heathrow and Gatwick airports during the afternoon.
Departure restrictions were implemented at both airports, affecting flights leaving the UK. Arriving flights at Heathrow and Gatwick were not impacted by the disruption. Flights originating from continental Europe heading to these London airports were held at European airports due to the issue.
Operations Impact and Responses
NATS confirmed the incident caused interruptions in departing flights across UK airports served by the provider. Heathrow Airport stated it was supporting the local air traffic control team while
the technical issue persisted. Eurocontrol attributed the delays for inbound continental flights to an ‘ATC equipment data processing’ problem.
A NATS spokesman said engineers were on site working to resolve the malfunction. “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,” the representative said.
Cause and Engineering Efforts
The disruption stemmed from a technical failure in NATS’ air traffic control system that affected data processing equipment. Eurocontrol confirmed this was the root cause behind flights being held on the ground at European airports
for flights destined for Heathrow and Gatwick.
Engineering teams remain on site, actively working to restore normal air traffic control operations and resolve the data processing issue.
Traveler Impact and Official Statements
Passengers departing from Heathrow and Gatwick on September 8 were subject to delays and advised by airports and air traffic control to expect restrictions on departure times. Passengers were warned to verify their flight status directly with their airlines before proceeding to the airports.
Heathrow’s spokesman emphasized that arriving flights were not impacted during the incident and offered apologies to affected passengers. NATS also apologized, acknowledging the disruption and pledging to provide timely
updates once the issue is addressed.
The restrictions on departures and grounded flights originating from continental Europe contributed to cascading delays across airline schedules affecting the afternoon travel window.
