Delta Airlines Cancellation Policy A passenger always worries when it comes to canceling a flight. The reasons for flight cancellation can vary from person to person. But the hassle travelers faces during cancellation is primarily chaotic. However, it is not the case with Delta Airlines. 888-506-3841 The Delta Airlines cancellation policy is flexible and helps a passenger to cancel the flight without hassle. Let’s understand how this airline's cancellation policy is helpful for you while canceling flights. Delta Airlines Flight Cancellation Policy And Refund Highlights You should know about the following rules of Delta Airlines Cancellation Policy.