https://us.community.sony.com/s/question/0D5Dp000023YtPgKAK/9147-un...
United Airlines offers various ticket options, including basic economy, refundable, and non-refundable tickets. Procedures for Cancelling Tickets on United Airlines As per the United Airlines Cancellation Policy, travelers are permitted to seek flight cancellations up to three hours before the planned departure time for international flights and two hours before the scheduled departure time for domestic flights (inside the United States) by contacting United Airlines at +1 (888) 829-1467 or +1 (888) 829-1467

Canceling United Non-Refundable Tickets: