You must contact the airline directly. Each airline has its own policy for unaccompanied minor travel. The minimum age at which a minor child may travel alone varies by airline and by whether it is a non stop flight or one with connections. There is an additional airline fee payable at the airport (it varies by airline and as to whether it is a non stop flight or has connections). The minor cannot travel on the last flight of the day. You must provide specific information on the person picking up the minor at the destination (fill out a form at the airport).