What are the fees for children traveling alone on a JetBlue flight? Children under the age of 14 traveling alone are considered unaccompanied minors and are required to pay an extra $150 additionally as the JetBlue unaccompanied minor fee with the normal price of the ticket. With an extra fee comes extra benefits. The children are given priority in boarding, snacks, meals, etc., and in case of flight cancellation or delay, they are given extra attention and assistance.