This story was last updated at 5.20pm on August 7
British Airways says it has fixed the IT failure which caused more than 100 flights to be cancelled and more than 200 to be delayed.
The airline said flights would return to normal but warned of continued disruption.
BA passengers have faced cancellations and delays all day following the IT glitch.
At least 117 flights have been cancelled at Heathrow and 10 cancelled at Gatwick.
The airline was having to use manual check-in systems at airports following the systems failure.
“Our teams have been working tirelessly to get the vast majority of customers on their way, with most of our flights departing.
“Our flights are returning to normal, however there may be some knock-on operational disruption as a result of the issue earlier today.
“We continue to advise customers to check ba.com for the latest flight information before coming to the airport.”
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