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How to arrange for your child to travel internationally as an unaccompanied minor
Check each airline's restrictions.
While there are general minimum restrictions that apply for all airlines, most have their own requirements for unaccompanied minors on international flights. Ages and documentation may differ depending on the airline and the destination country.
In particular, some airlines won't accept unaccompanied minors as passengers on international flights at all. Other airlines allow unaccompanied minors on international flights, but won't take children under a certain age, such as 10 or 12.