United Airlines provides a 24-hour cancellation policy γ+πβ¦(β«π ππβ«πππβπ±π²ππγ. If you book a flight at least seven days before departure and cancel within 24 hours of booking γ+πβ¦(β«π ππβ«πππβπ±π²ππγ (πΎππ°)γ), you are eligible for a full refund without any cancellation fees.