Lifestyle: The chaos continues for travellers who are delayed at Heathrow airport
The disruption began on Saturday.
Despite being informed it was hoping to run a "near normal schedule" earlier, over a third of British Airways flights have been cancelled as the chaos continues into a second day at Heathrow airport.
The airline was hit with a global computer system power failure on Saturday, leaving thousands of customers stranded at Gatwick and Heathrow airports in London.
BA has requested that people check their status of flights before coming to Heathrow, and to only show up if a replacement flight has been confirmed.
BA apologised for the issue which was thought to be caused by a problem with the IT system's power supply.
According to the Evening Standard, some travellers have reported having to pay up high sums of money to stay at nearby hotels, despite being entitled to compensation. Some customers have also reported they've been asked to leave the airport without their belongings.
According to the BBC, travellers who have been displaced by flight cancellations can claim up to £200 per day for a hotel room, £50 for transport, and £25 a day per adult for meals and refreshments.
Between 6am and 11am on Sunday, 143 British Airways flights were scheduled to depart from Heathrow and Gatwick. 90 have left Heathrow and 36 have been cancelled. 17 flights have departed from Gatwick.
BBC correspondent Phillip Norton is currently stranded in Rome. He reported that although BA is telling people to rebook their flights on the app or website, error messages come up, meaning they are unable to do so.