Dozens of British Airways flights have been disrupted due to a “technical issue”, according to the airline.
The disruption has affected flights to and from Heathrow and Gatwick, the UK’s two busiest airports.
By 9am on Thursday at least 45 flights due to land at Heathrow had been delayed by more than 45 minutes.
By far the worst affected was a flight from Pittsburgh, which was due to land at 9.35am Thursday morning but is now expected to arrive at 9.40pm Thursday evening.
A spokeswoman for the British Airways said it was “very sorry for the disruption”.
“Our teams are working hard to resolve a technical issue which is affecting some of our flights, and we have rebooked customers on to alternative flights and offered hotel accommodation where they have been unable to continue their journeys last night,” she said.
The airline has suffered a series of controversies and systems failures in recent months.
An IT glitch caused the cancellation of more than 100 flights in August, affecting tens of thousands of travellers.
At the time it was predicted British Airways could face a bill of more than £8 million if all passengers claimed compensation under European Union rules.
In September more than 1,700 flights were cancelled when pilots staged a two-day strike over pay.
The airline’s owner IAG said its profits would be lower than expected, partly due to the strike.
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