I always fly as a unaccompanied minor when I go see my dad in florida. and I've been doing that since I was about 8. now I'm no longer a "unaccompanied minor" I just have to have somebody check me in and take me to my gate, and that was since I was 13.
hm probably aroung 10. I have a friend who is 12 and he went from Wisconsin all the way to Arizona on a play by himself, and yea that was with parents permission
um on a plane 5 and up. am breen traveling since I was 5 all by myself. and on a ferri I think you have to b wit an adult. not neccasrly your parents "D