We know that life happens, and you may need to change your trip plans suddenly. United Airlines Policy on Changing Flights gives you the freedom to make changes to elect reservations within 24 hours of reserving and marking, without being charged change freights if you made your purchase bone week or further before the flight was listed to depart. This includes canceling your reservation and requesting a full refund of the ticket price. Although Basic Economy reservations are not eligible for changes within 24 hours, they ’re still eligible for a full refund if you cancel within 24 hours and you made your purchase bone week or further before the flight was listed to depart. To know more about our United Airlines Policy on Changing Flights To know more about our cancellation policy please visit our website.