Yes, a 14-year-old can travel alone on JetBlue and is no longer considered an unaccompanied minor once they reach their 14th birthday. According to JetBlue's 2026 policy, the mandatory Unaccompanied Minor (UMNR) program only applies to children between the ages of 5 and 13. At 14, the child is booked as an adult and does not require the specialized escort service or the $150 per-person, per-way fee. However, they must be comfortable navigating the airport, security, and boarding processes independently. It is important to note that while JetBlue treats them as adults, they still cannot be the "escort" for a younger child (aged 2–13) unless they are 14 or older. Parents can still request "additional assistance" through the airline's customer service if they have concerns, but the formal legal "handover" process ends at age 14.