United Airlines Economy cancellation policy offers flexibility for travelers looking to adjust their plans. If you cancel within 24 hours of booking and the flight is at least seven days away, there are no cancellation fees. Non-refundable Economy tickets may incur a cancellation fee, while Basic Economy fares are non-changeable and non-refundable. Refundable Economy tickets provide the most flexibility, allowing free cancellations or changes without penalties. You can manage cancellations or changes conveniently through United Airlines' website or mobile app. Be sure to review your fare rules for the specific terms and conditions related to cancellations.