While Changing BA Flight if you do not want to choose the online option to make changes to your British Airways flight booking, you can always choose the offline method. Passengers can have the changes made at the British Airways reservation centre 1-800-364-9405 or at the kiosk at the airport. You can also call the British Airways change phone number 1-800-364-9405 to request changes and amendments. The British Airways staff will assist you with British Airways Flight Change Policy and quality service. You can make a call on British Airways helpline 1-800-364-9405 anytime and get all details about flight from executives.