1-888-595-2181 JetBlue allows passengers to change their flights, but the airline doesn't automatically initiate changes. It's up to the traveler to request modifications if needed. However, JetBlue offers flexibility for passengers to make changes online through their Manage Trips section if they booked directly with the airline. Additionally, passengers can opt to call JetBlue customer service at +1-800-JETBLUE to speak with a representative who can assist with flight changes.