Airlines and airports across the UK continue to face challenges in restoring normal service as flight cancellations and extensive delays are ongoing following a major air traffic control technical issue that grounded numerous planes and forced substantial schedule changes for tens of thousands of passengers. The technical malfunction disrupted a crucial system at the UK’s air traffic control agency, which led to rigorous restrictions on flights both departing from and arriving at UK airports.
Widespread fallout after system malfunction grounds flights
On Tuesday, the failure in the air traffic control system halted air travel throughout the UK, with FlightRadar24 counting as many as 1,000 cancelled departures. The glitch stemmed from a flight data processing system overseen by National Air Traffic Services (Nats), resulting in significant disruptions at leading airports, where stranded travelers waited as hundreds of flights were axed or rerouted.
Chief executive Martin Rolfe of Nats issued an apology to those affected, explaining that the technical issue had proven far more intricate and lengthy to resolve than first expected, and assured the public that a “full investigation” would follow. He clarified that the disruption originated from a system crucial for processing flight plans and operational information, essential for maintaining safe airspace operations. According to Rolfe, this outage was not connected to the breakdown Nats endured during the August Bank Holiday weekend in 2023.
Among the airlines, EasyJet was compelled to cancel about 200 services and British Airways halted over 100 flights. Ryanair reported that over 65,000 passengers faced delays of up to eight hours. The disruption extended to airports in Ireland and Scotland, as well as some locations outside the UK.
Persistent backlog strains airports and airlines
At Heathrow Airport, the crisis caused a midday suspension of all departures while the incident unfolded. Although flights briefly resumed, further complications led to renewed delays, and eventually all arrival stands were occupied as departing planes could not leave. As a result, thirteen inbound flights to Heathrow were diverted to other airports in the UK and continental Europe.
British Airways issued a warning about “continuing knock-on effects,” urging only those confirmed to be flying to come to the airport. The airline noted that its call centers were overwhelmed and instructed travelers to consult their airline for the latest updates.
Ryanair announced that affected customers would receive direct notifications of any changes to their flights. Airports around the UK also emphasized the need for passengers to check the latest flight status before heading out. According to data from FlightRadar24, the most severe delays affected Heathrow, Gatwick, Manchester, and Birmingham.
Industry demands reform as investigations begin
Citing the impact of the disruption, airlines such as Ryanair and Wizz Air criticized the current Nats infrastructure and called for substantial changes, with Wizz Air labelling Nats as “not fit for purpose.”
Transport Secretary Heidi Alexander commented on the lengthy process of restoring regular service, stating that “it will take time to fully resume flights” and encouraging the public to stay updated with their airlines for the latest information. She also revealed via social media that she had requested assurances about future improvements and called Nats executives to meet on Wednesday for a full explanation of the incident’s root cause.
Passengers described lengthy waits during the disruption, with Phil White recounting hours spent on the tarmac at Gatwick ahead of a Lanzarote departure, and Chloe Davis sharing how her flight from Heathrow to Orlando was delayed due to unavailable gates for arriving planes.
Ongoing delays as recovery continues
While Nats has now resolved the technical glitch, the effects of missed and delayed flights persist, straining both airports and passengers. Continued ground capacity constraints mean that long waits for departures and arrivals are still likely. The ripple effect has impacted European flight operations in addition to those in the UK.
With a formal investigation launched, both airports and airlines continue to advise travelers to double-check their flight status before making their way to the airport, and to prepare for prolonged disruption as normal operation is gradually restored.