Air traffic control systems at London’s Heathrow and Gatwick airports experienced a technical failure, leading to the grounding of all flights at both locations. The disruption, reported on October 6, 2025, left thousands of passengers stranded as flights were either canceled or significantly delayed. According to NATS, the operator of the UK’s air traffic control system, the issue has been resolved, and operations are returning to normal.

The technical failure affected both Heathrow and Gatwick, with reports indicating that flights from Luton and Stanstead airports were also impacted. Passengers were left waiting at the airports, with some facing overnight stays. The disruption highlights the critical role of air traffic control systems in managing the high volume of flights through London’s major airports.

NATS confirmed that the system issue has been resolved and that staff are working to clear the backlog of flights. However, the incident has raised concerns about the reliability of air traffic control infrastructure. The full impact of the disruption on travelers and airlines remains under assessment.

The situation underscores the vulnerability of aviation systems to technical failures, especially during peak travel periods. Airlines and airport authorities are now working to restore normal operations as quickly as possible.