Iran Press/ Europe: The airline apologized to customers who were inconvenienced by the problem, saying it had affected its operation for “a short time”.
In a tweet, it later confirmed the issue had been resolved and it was working to help passengers whose journeys had been disrupted.
The issue is the latest to beset the airline in recent months.
In late February, the airline was forced to cancel all short-haul flights from Heathrow for several hours due to a hardware problem.
In a statement on Wednesday afternoon, a British Airways spokesperson said: “We experienced a technical issue for a short time this afternoon which affected our operation at Heathrow Terminal 5.
“This has now been resolved and we’re resuming flight operations.
“We’ve apologized to those customers who have been inconvenienced.”
According to British Airways’ website, dozens of flights due to leave Heathrow Terminal 5 between 1 pm and 6 pm on Wednesday were canceled or departed late.
The site also shows others departed on time or early.
In a tweet, Heathrow Airport said: “A technical issue which affected British Airways this afternoon has now been resolved.
“We’re working with our airport partners to assist passengers whose journeys have been disrupted and have deployed additional resources in our terminals.
“Passengers are still advised to check their flight status with British Airways before traveling to the airport due to a number of resulting cancellations.
“We apologize for any inconvenience caused.”
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