Since JetBlue gift cards are available in denominations as low as $10, it's a good idea to check your balance before trying to book a flight. Perhaps the easiest way to get your JetBlue gift card balance is to use the online balance checker (linked to below) or by calling the Jet Blue 1-800 number. Of course, you could also visit the nearest ticketing counter to enquire about how much is left on your card.
