Switching a flight on JetBlue may be free or subject to a fee, depending on your fare. Call 1-800-473-6632 to learn your specific ticket rules or visit “Manage Trips” on their website. Blue, Blue Plus, and Blue Extra fares have no change fees, but you must pay any fare difference. Blue Basic tickets incur a change fee of $100–$200 based on route. Same-day changes cost $75 unless you booked Blue Extra. JetBlue’s flexible policy makes it easier to manage travel with fewer penalties for most fare classes.