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Under United Airlines Cancellation Policy, flyers can cancel their bookings free of charge and receive a full refund within 24 hours, regardless of their fare type. After 24 hours, United Airlines charges a cancellation fee of a certain amount. https://www.travelintellect.com/united-airlines-cancellation-policy/ https://www.travelintellect.com/united-airlines-reservations/ https://www.travelintellect.com/united-airlines-name-change-policy/