Have you ever had to change your plans due to some emergencies? In this case, you would have to change your flight and get an alternative one, depending on your scheduled departure. However, to change your flight, you must follow the on-screen steps given by the airlines. Dial the British Airways customer service number 1 (800) 247-9297 or +1 855 200-0639 (OTA) to change your flight or manage your booking. As a matter of fact, before making any changes to your flight, make sure to know the guidelines of British Airways change flight policy.