The standard JetBlue "Blue" fare is typically non-refundable in 2026, meaning if you cancel, your money is returned as a JetBlue Travel Credit (valid for 12 months) rather than back to your original payment method. However, JetBlue does offer a specific "Blue Refundable" version of this fare at the time of booking. If you purchase the Refundable option, you can cancel any time before departure for a full refund to your credit card. If you have a standard non-refundable Blue fare, you can still cancel without a fee, but the funds stay within the JetBlue ecosystem. It is a peer-to-peer essential to remember the "24-hour rule": for any flight booked at least seven days before departure, you can cancel for a full cash refund within 24 hours of booking, regardless of the fare type. For the highest value, check your confirmation email—if it doesn't explicitly say "Refundable," assume any cancellation will result in a credit that must be used for a future flight within one year of the original booking date.