JetBlue provides a flexible 24-hour refund policy, allowing you to cancel or change your flight without penalties if done within 24 hours of the booking. This policy applies to all ticket types, including the usually non-refundable fares, as long as the flight is scheduled to depart at least seven days after the initial booking. To claim a refund or make changes, you can log in to your JetBlue account and manage your reservation online or reach out to their support team.