To cancel a trip with United Airlines in 2026, the most efficient method is through the "My Trips" section of the United app or website. You will need your confirmation number and last name to access the reservation. Once the trip is open, look for the "Cancel Trip" button; the system will then show you whether you are eligible for a full refund or a Future Flight Credit. Under United’s current policies, most "Economy" and "Premium" tickets can be canceled for a credit without a fee, while "Basic Economy" tickets are generally non-refundable and non-changeable unless you are within the 24-hour flexible booking window (which allows a full refund to the original payment method for any ticket booked at least a week before travel). If you booked with miles, those will be redeposited into your account immediately upon cancellation. If you encounter issues online, you can use the "CoBrowse" feature to get help from a live agent who can see your screen and guide you through the process without needing to read out your sensitive personal information over the phone.