Thousands of British Airways passengers who were left stranded at Gatwick and Heathrow Airports on Saturday following an IT crash faced extortionate prices at nearby hotels.
According to the Daily Telegraph, some airport hotels were charging between £1,000 and £2,500 for the night.
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It comes after air travel experts said BA is likely to be left with a massive compensation bill.
Malcolm Ginsberg, editor in chief at Business Travel News, told the Daily Mirror: "There is no question - the EU denied-boarding regulations will have to apply.
"They have broken all the rules and they will have to deal with it - it's going to be a very expensive situation for BA."
He added: "The money doesn't really compensate passengers for the situation."
The airline said it was aiming to operate a "near normal schedule" at Gatwick and the "majority of services" from Heathrow on Sunday.
Saturday saw chaotic scenes at both airports as people tried to make their way abroad for the long weekend and half-term school holiday.
All of BA's check-in and operational systems were affected, as well as the customer service phone line and rebooking function.
This had a knock-on effect on operations around the world.
Travellers were told to check the airline's website and Twitter for updates.
British Airways said the glitch is believed to have been caused by a "power supply issue" and there was no evidence of a cyber attack.
Terry Page, 28, had flown in to Heathrow's Terminal 5 from Texas said BA had lost his and "about 50" other passengers' luggage.
Speaking to the Telegraph, he said they were told that they were hoping they would have their luggage on Monday.
"It's affected so many people," he said. "Some 80-year-old lady was standing around waiting for announcements, et cetera - and she fell over."
He added: "We helped her up and she said 'I'm just so tired'".