(1-833-460-1838 ) What is the 24 hour cancellation policy? https://central.xero.com/s/question/0D58V00009B59DfSAJ/18334601838-what-is-the-24-hour-cancellation-policy 24-Hour Cancellation Policy (1-833-460-1838 ) United Airlines allows you to cancel your flight within 24 hours of booking without any penalty, as long as the ticket was purchased at least one week before departure. #UnitedAirlinescancellationpolicy, #unitedairlinephonenumber