Which referring term is used for individuals who travel alone and are under a specific age restriction?

The term "Unaccompanied Minor" is used specifically to refer to children who are traveling alone without an adult guardian or companion. This designation is important in the context of air travel, as airlines have special policies and services in place to ensure the safety and well-being of these young travelers. An unaccompanied minor is typically a child who falls below a certain age threshold, usually under 18 years old, and the airline provides additional assistance, such as escorting them through security and boarding processes.

In contrast, the other terms do not carry the same specific connotation or established protocols associated with minors traveling alone. "Solo Traveler" is a more general term that can apply to any individual traveling independently, regardless of age. "Individual Minor" and "Single Child Passenger" are not commonly recognized terms in the airline industry and do not convey the specific procedures and care that an unaccompanied minor would receive. Thus, "Unaccompanied Minor" is the correct term that aligns with airline protocols and regulations regarding young passengers traveling alone.