If you've received a travel credit or voucher, you may be wondering how it works when modifying an existing booking. The jetblue change flight option allows the use of credits toward fare differences or new flights, depending on the terms. Always check the expiration date and ensure the credit applies to your new itinerary. Using available credits wisely can help reduce out-of-pocket ... https://www.flightaura.com/flight-change-policy/jetblue-flight-change-policy/