According to Bangkok Airways Cancellation Policy, travelers can cancel or change their booking flight within 24 hours before the actual departure of flight time, and save cancellation charge. The passenger can make a flight change or cancel by going to the official website of Bangkok Airways or API, and via the help of a travel agent. Customers can contact to the Bangkok Airways Customer Service 1-800-364-9405 and ask for change or to reschedule flight & Bangkok Airways live agents are there to assist you change your booking on time without extra fee. For more details go through the Bangkok Airways Cancellation Policy and cancel flight ticket easily.