The boss of British Airways said airlines should not bear the cost of expanding Heathrow.
Chief executive Alex Cruz said BA would look to move resources if there were immediate price rises.
He was giving the British Air Transport Association’s annual lecture days before ministers are due to make an announcement on how the government plans to expand airport capacity in the south of England.
Cruz said that there was an “overwhelming case” for expanding capacity at Heathrow, but not at any cost, according to the Financial Times.
“Any notion that the cost will be borne by airlines is not acceptable,” he said.
He said BA would not leave Heathrow altogether but it would look at expanding elsewhere.