How to Cancel a United Airlines Flight? https://fortalent.com/blog/view/s/2021-03-18-how-to-cancel-a-united-airlines-flighty/ Using the United airlines manage booking feature on the official site, a flyer can make flight changes to their booked reservation whenever required. It includes changing the travel date or destination, rebooking or canceling, making an advance seat selection, requesting extra baggage allowance and additional services depending on the flyer’s travel requirements.