From the age of 7 - 15, I was a young flier and had to get two planes from where I lived in the Outer Hebrides, to get to London, so I could visit my father, every school holiday. So although not strictly alone, I had airport people keeping an eye on me (barely at all as I got older). But I loved it, especially getting to drink wine on the airplane, as there were no laws on age up in the air at that time and I got to visit the pilots in the cockpit because I wanted to see what it was like to 'drive' an airplane.