United 24-Hour Refund Policy Yes, United offers a 24-hour refund policy, which allows you to receive a full refund if you cancel within 24 hours of booking 1-866-884-3315 If you need assistance, please contact our support team at any time 1-866-884-3315. https://support.cgu.edu/hc/en-us/community/posts/32076565589780--UA-Cancellation-Trips-What-is-the-cancellation-policy-for-United-UA-Refund-Guide