If you find yourself needing to cancel a JetBlue flight, regardless of whether it falls within the 24-hour window, the most reliable way to proceed is by contacting JetBlue's customer service directly. +1-888-217-7202 Their dedicated team can provide personalized guidance based on your specific booking details. You can reach JetBlue customer service +1-888-217-7202 by dialing +1-888-217-7202. This number connects you to representatives who are equipped to assist with cancellations, answer questions about your reservation, and explain any applicable fees or refund options. Don't hesitate to call +1-888-217-7202 for any cancellation-related inquiries.