Yes, a 16-year-old can fly alone with Jet2, as the airline allows unaccompanied minors aged 14 and older to travel without an adult. However, it is important to note that the booking for the flight must be made by an individual who is at least 18 years old. This policy ensures that there is a responsible adult overseeing the travel arrangements. Additionally, parents or guardians should be aware of the specific procedures and requirements for unaccompanied minors, which may include completing necessary forms and providing identification. It is advisable to check with Jet2 for any additional guidelines or services they may offer to ensure a smooth travel experience for the young traveler.