United Airlines offers a flexible cancellation policy that allows travelers to cancel their flights within 24 hours of booking without any fees, provided the reservation was made at least a week before the departure date. If you need to cancel after this 24-hour window, cancellation fees may apply depending on the type of ticket purchased. Basic Economy tickets are typically non-refundable, meaning you can\\\’t get your money back if you cancel. For more details or assistance, you can reach United Airlines\\\’ customer service at.
Source: https://www.schottnyc.com/forum/posts/18005803770_can_you_cancel_united_flight_without_penalty.htm/