Yes, JetBlue allows flight cancellations, though the specifics depend on the fare type and time of cancellation. Call at +1-888-415-1245 (US) or +44-203-869-5245 (UK) Most fares can be canceled without a fee for a full refund or credit, especially within 24 hours of booking, while other fare types, such as Blue Basic, may have fees or restrictions. Call at +1-888-415-1245 (US) or +44-203-869-5245 (UK) For cancellations made by JetBlue due to operational issues, customers are offered a refund or rebooking to an alternate flight.