British Airways operates a full flight schedule

London, May 30: British Airways (BA) launched a full flight schedule Tuesday. The media reportedly said thousands of flights were canceled during the weekend due to the failure of IT. "Our IT systems are now backwards, we are conducting a full flight schedule at Heathrow and Gatwick," the airline said in early Tuesday. But it warned it "may take some time" to reunite travellers with their bags, reports the BBC.
BA chief executive Alex Cruz blamed a power surge for the disruption which affected 75,000 people. "There was a power surge and there was a back-up system which did not work at that particular point in time," Cruz told the BBC. 
"It was restored after a few hours in terms of some hardware changes... we will make sure that it doesn't happen again." He said the failure affected "all the operating of our systems -- baggage, operations, power processing". BA is responsible for repayment of thousands of passengers for refreshments and hotel expenses, and the travel industry commentators have proposed to spend the company - IAG, Europe's largest airline group run for tens of millions of pounds.Shares in IAG listed in both London and Madrid dropped 2.8 percent in Spain on Monday and will fall back to London after Bank Holiday.