Following problems with British air traffic control, air travelers to and from Great Britain must continue to expect disruptions today. The National Air Traffic Services (NATS) authority announced last night that it would take “some time” for air traffic to return to normal.

Britain’s largest airport, London Heathrow, warned on the social network X, formerly Twitter, that flight schedules were still “significantly disrupted”. Air travelers should contact their airline before traveling to the airport.

Meanwhile, the second largest airport, London Gatwick, said it was planning to offer a “normal flight schedule”. Nevertheless, travelers should check with their airline about the status of their flight before arriving at the airport.

Hundreds of flights had previously been canceled due to “technical problems” with British air traffic control. As the BBC reported yesterday, citing the aeronautical analysis company Cirium, a good 270 landings and more than 230 take-offs were canceled. In the afternoon, NATS said the problem affecting its flight planning system had been “identified and fixed”.

On social networks, passengers bound for Great Britain reported hour-long delays and flight cancellations. Experts expected that the consequences in British air traffic around the important London hub could still be felt for days.