https://www.wikiloc.com/hiking-trails/how-do-i-link-reservations-on-american-airlines-213377141
When a child travels alone as an unaccompanied minor, airlines enforce strict guardianship requirements and restrictions to ensure that the child is safe, accounted for at all times, and only released to the proper adult at their destination. These policies are designed to prevent unauthorized handoffs, reduce security risks, and comply with national and international child welfare laws.