A technical failure in the UK air traffic control system run by NATS disrupts flights and leads airlines to cancel 425 departures, according to reports. Airport operations begin to recover later, but schedules remain affected as airlines adjust plans.

The disruption hits multiple parts of the UK air network, with London and Manchester airports described as among the worst affected. Outlets attribute the problem to a failure in NATS’ flight processing system, which slows or interrupts coordination for arrivals and departures. As a result, airlines cancel flights rather than operate them under degraded conditions.

Across the coverage provided, the central points are consistent: NATS identifies a system-level issue affecting air traffic processing, flight operations are disrupted, and cancellations reach 425. The reporting emphasizes the scale of cancellations and the gradual return toward normal operations, without detailing any single airline’s specific operational response beyond schedule changes.