Concerned about when to reschedule your United Airlines flight for a refund? In certain circumstances, United Airlines refund policy is applicable. No matter the kind of tariff or the preferred carrier, the rules apply to both refundable and non-refundable tickets. The cancellation fee within 24 hours of purchase is no longer required. In accordance with this policy, you are entitled to a full refund if you cancel more than 7 days before the departure date.