Hundreds of thousands of people are thought to have been affected by flight cancellations and delays, caused by an air traffic control issue on Tuesday
Transport Secretary Heidi Alexander apologises "wholeheartedly to passengers" and asks the UK Civil Aviation Authority to conduct an independent review
In a statement, the regulator says people are "unlikely to be entitled to compensation for delays or cancellations that were directly caused by the incident"
Throughout the day, images have shown passengers sleeping on airport floors, with aviation analytics firm Cirium saying more than 340 flights were cancelled today - around 5% of the total
Newlyweds Sasha and James say "it feels like we will spend our honeymoon at Gatwick", while one woman due to leave Turkey on Tuesday is now stuck until Thursday
Has your flight been cancelled? Our correspondent takes you through your rights
British Airways says like other airlines, it is "experiencing some disruption to flights as a result of a technical issue affecting air traffic control, which is run by National Air Traffic Control Services".
"This is entirely out of our control and we're in touch with our customers whilst our teams work to get them on their way as quickly as possible," it adds.
EasyJet says some of its flights are "unable to operate" following the technical issue affecting air traffic controller Nats.
"A Nats Air Traffic Control system failure this afternoon is unfortunately causing delays to flights across Europe with some flights unable to operate," the airline says in a statement.
The airline adds that it will do all it can to minimise the impact to customers, such as providing those on flights unable to operate with their options, including a free transfer or refund, and meals and hotel accommodation for those who require them.
Image source, EPATransport Secretary Heidi Alexander has posted saying she's "aware" of the technical issue.
"Technicians have identified the issue and are fixing it as we speak," she posts on X.
"I know this will be frustrating for passengers and I'm sorry. Please check with your airline for latest advice."
Flights departing the UK have been disrupted by an air traffic control "technical issue", the air traffic control group Nats says.
Nats says: "We are investigating a technical issue which is causing some disruption to flight departures.
"Our engineers are on site and we will provide an update as soon as we can.
"We apologise for the delay this will cause to journeys, passengers should check with their airline on the status of their flight."
This is a developing story - we'll have more details from airports and airlines soon.