If your children are traveling alone. JetBlue welcomes a child aged 14 years and older on all flights. Extra charge for booking a ticket for an unaccompanied minor could be saved by using the online-
Visit the official JetBlue website.
Click on the “Book” icon.
Provide them flight information, and from the traveler's section, choose “child” as a passenger.
Provide them all information, including details about the child and the designated adults for drop-off and pick-up
Pay the cost of the ticket with the unaccompanied minor fees