British Airways travelers found themselves waiting at UK airports for hours early Wednesday, due to problems with its online check-ins, flight departure systems and app. The airline is used "back-up manual systems" to keep flights operating, and said in the afternoon that the problem was resolved.
Nearly 100 flights from London's Heathrow and Gatwick have been canceled, and 200 have been delayed, according to ITV. Flights from Edinburgh, Glasgow, Belfast and Dublin have suffered similar problems, the Guardian and the Irish Times noted.
Long lines formed at airports across the UK, However, the problem isn't global and hasn't impacted flights at every airport, the BBC reported.
The airline apologized to customers in an afternoon statement noting that the problem was resolved.
"We have resolved the temporary systems issue from this morning which affected a number of our flights today," it said via email. "Our flights are returning to normal, however there may be some knock-on operational disruption as a result of the issue earlier. We continue to advise customers to check ba.com for the latest flight information before coming to the airport."
People on short-haul flights from Heathrow, Gatwick and London City airports due to travel on Wednesday are getting the chance to rebook their journey from Aug. 8 to 13, the airline said, while people whose flights are canceled can get a refund or rebook.
The airlinein May 2017, when a massive IT failure forced it to cancel all flights out of Heathrow and Gatwick airports. Last month, it was over that impacted 500,000 people.
First published at 3 a.m. PT.
Updated at 8:40 a.m. PT: Notes that problem has been resolved.