Delta knows that travel plans can change at any time, therefore customers can cancel their tickets at any time. Your delta airlines refund may be rescheduled in accordance with the airline's refund policy. Delta Airlines Manage Booking is available to passengers who have made advance reservations and are confused how to make adjustments. As a result, they are able to make quick decisions. Your membership can be cancelled at any time. See also: american airlines refund | united airlines refund