You can or may not get a refund of the cancellation if you desire to cancel/change your trip and want a new reservation/vol with United Airlines, as the reason and timing for cancelling the ticket and your kind of ticket are dependent on it.
You have to talk to an agent before you make requests for priceless tickets. Go through the rules on the Change of United Airline Flight and measures to know exactly how to obtain the new tickets. The question below is the solution" How may a flight be changed on a unit? ”
Click on "My Reservations" in order to alter your aircraft online, visit the official website of the United Airlines. Enter your last name and credit card number and confirmation number, or log in with your existing united account and make your itinerary choices. Search, pick and turn off for a new flight.
Begin the check-in procedure using the united airlines' official website. If you are prepared to move to a standby status on an aircraft with the same destination within the next three hours, use your original reservation. If available make a selection and choose the standby status for an earlier flight. A price is paid for this service only if you get on board the previous aircraft successfully. You will keep your original booking if you are no longer able to join a standby aircraft.
You do not have any opportunity to alter this online by calling the unit reservation number of united airlines to change your miles plus award tickets or miles and cash award tickets. You may also alter the booking or change to the same day by phoning the united airline booking department.
Seek guidance and assistance with modifications to your reservation or changing to an earlier flight from the United Booking Center or kiosk. If you did not book your initial airline tickets online using united.com, you might pay an additional fee to alter the basic changes and cost of travel to a third party.