According to the rules of the U.S. Department of Transportation, you can usually get a full permit if you cancel the booking within 24 hours by visiting the official website of United Airlines at united.com or by calling the helpline number 1-800-UNITED-1 OTA 1-888-(344)-7417 How do I know if my United ticket is fully refundable? - Bioneers Live https://bioneerslive.org