Delta Airlines Cancellation Policy: What You Need to Know When booking a flight with Delta Airlines, it's essential to understand their cancellation policy to avoid any unexpected fees or hassles. The airline's cancellation policy outlines the rules and charges associated with modifying or canceling your reservation. Here's what you need to know about the Delta airlines cancellation policy: Cancellation Fees and Refunds The Delta airlines cancellation policy varies depending on the fare type you've purchased and the time frame in which you cancel. Generally, if you cancel a reservation, you'll be subject to a cancellation fee, and the remaining balance may be refunded in the form of a travel credit or a full refund to the original form of payment.