To cancel a United Airlines flight, go to the United website or app and open “My Trips.” Enter your confirmation code and last name, find your booking, and choose “Cancel” to remove the reservation. United’s cancellation rules depend on your fare type — if you cancel within 24 hours of booking, you can usually get a full refund. After that, refundable tickets will return your money, while non-refundable fares typically turn into travel credits you can use later. If you don’t see the cancel option online, customer service can walk you through it.
