United Airlines offers a flexible 24-hour cancellation policy ????????-???????????????????? ????*????????????*????????????*????????????????. If you cancel or make changes to your reservation within 24 hours of booking and the flight is scheduled at least 7 days later ????????-???????????????????? ????*????????????*????????????*????????????????, you are eligible for a full refund without any fees. This policy applies to most tickets purchased directly through United Airlines' website, app, or customer service. For assistance or further clarification, you can contact United Airlines at ????????-???????????????????? ????*????????????*????????????*????????????????.