JetBlue Airways typically offers a 24-hour cancellation policy, allowing passengers to cancel their reservations within 24 hours of booking without incurring any cancellation fees, regardless of the fare type selected. This policy applies to bookings made at least seven days prior to the scheduled departure date. Passengers who cancel within this timeframe are entitled to a full refund to their original form of payment. However, it's important to note that if the booking is made less than seven days before departure, the 24-hour cancellation window may not apply, and standard fare rules and cancellation fees may be applicable. Additionally, any optional services or fees paid during the booking process may not be refundable. For specific details or assistance with cancellations and refunds, passengers are encouraged to contact JetBlue Airways directly or manage their booking through the airline's website or mobile app.