The following is a step-by-step instruction for cancelling your United Airlines flight:
To cancel your ticket, go to the airline's website at https://www.united.com or make use of a mobile application.
As soon as you click "My Reservations," the website will prompt you for your ticket number and name.
After entering your ticket number and name, select Cancel from the drop-down option.
When your flight is successfully cancelled, the airline will send you an email to let you know.
If your ticket is eligible, a refund is possible.
United Carriers charges the least amount for cancellations compared to other airlines.