All customers can have twenty-four hours from the time of their original booking to cancel their reservation while not being charged a cancellation fee, no matter the fare chosen. For change flight JetBlue non-refundable fares, changes, or cancellations are also made prior to scheduled departure for the per-person change/cancellation fee and any applicable difference in fares. If you keep your price tag separate from JetBlue Airlines directly, you will be able to modify your travel date, time, and/or destination online. This often applies if your booking is made seven or more days before your departure. Passengers will modify any flight while charges will not. JetBlue makes it very simple to change or cancel your flight. Simply visit our official website of airlines.