You can cancel United Airlines flights and may be eligible for a refund depending on the type of ticket you purchased and the timing of your cancellation. United offers refundable and non-refundable tickets. If you have a refundable ticket, you can cancel your flight at any time and get a full refund to your original payment method. Non-refundable tickets generally cannot be refunded for cash, but you may receive travel credit for the value of the ticket, which can be used for future bookings. United also has a 24-hour cancellation policy that allows you to cancel your flight within 24 hours of booking and receive a full refund, as long as the reservation was made at least seven days before the flight. If United cancels your flight or significantly changes your schedule, you are entitled to a full refund regardless of ticket type. Basic Economy tickets are usually non-refundable and have more restrictions on changes and cancellations. To cancel, you can use the United website or app, where you can manage your booking and request cancellation. Refunds for eligible tickets are typically processed within seven to ten business days for credit card payments. If you cancel a non-refundable ticket outside the 24-hour window, you will most likely receive travel credit rather than cash. Always check your ticket’s fare rules before canceling to understand your refund options.