when at some point you are going to cancel a plane ticket with a problem. You may have to buy a refundable ticket to help change and cancel the flight ticket online. Here you will learn about the policies that are useful for canceling an American Airlines related flight With cancellations, all customers will have 24 hours from the time of their original reservation to change their reservation without being charged a fee, regardless of the rate selected. While making travel plans these days can be unpredictable and often out of your control, the airline has simplified policies to add flexibility for passengers.