how to cancel thai airways flight? When canceling your Thai Airways flight, you will need to provide certain details such as your booking reference number, passenger name, and flight details. Once the cancellation request is processed, you will receive a confirmation email or notification regarding the cancellation. Thai Airways typically offers a refund for canceled flights, but the amount refunded may depend on the fare conditions of your ticket. It is recommended to check the refund policy to understand the applicable charges or penalties, if any.