Snow prompts cancellation of hundreds of flights at Heathrow Airport LONDON, Jan. 20 (UPI) -- Heavy snow has prompted London's Heathrow Airport to cancel flights for a third day Sunday, officials said. Forecasters predicted as much as 2.3 inches of snow for London, prompting the airport to cancel at least 110 flights Sunday and that number could reach as high as 250 flights, the BBC reported. More than 100 flights were axed Saturday and more than 400 Friday, leaving thousands of passengers stranded. British Airways apologized to passengers who were stuck in airplanes waiting to take off Saturday, saying in a statement: "We are doing everything we can to help customers whose flights have been disrupted by severe weather." Emma Gilthorpe, executive director of Heathrow Ltd, told Sky News the airport had very little freedom to manage with the kind of disruption caused by the weather in recent days. "The fact that we operate at almost full capacity means that when there's disruption and we do have to space the aircraft at a greater distance we have little room to maneuver, which is why it's so important we make decisions ahead of time so we don't cause disruption to more passengers than we need to," she said. Liverpool John Lennon and Manchester airports were operating normally during the weekend but advised passengers to check with airlines about possible delays or cancellations.