Our reporter Barnaby Papadopoulos has the latest.
National Air Traffic Services says its engineers are investigating a technical problem.
Heathrow Airport’s apologised to passengers who’ve been affected and says there’s been no impact on arriving flights.
Lisa Minot is Head of Travel at The Sun.
Responding to news of massive disruption to departures from key UK airports because of a fault with the Flight Processing System, Sutton MP, Luke Taylor (Chair of the Future of Aviation, Travel & Aerospace APPG), said:
“I’m deeply concerned by the ongoing problems with the Flight Processing System that have grounded departures at Heathrow, Gatwick and other airports.
“Passengers should continue to check the status of their flights with their airline.
“I know how much frustration this will be causing, and there’s clearly a pattern emerging of serious problems with our aerospace infrastructure.
“Once this incident is resolved, there must be a serious, intensive review of current failings and a commitment from the Government to the investment and modernisation our systems need to keep our skies open.”
The Transport Secretary’s apologised for a “frustrating” travel experience.
