Summer of 1952. Mid-Continent Airlines Convair 340 from TUL to the old downtown Kansas City airport. I was 10 and got to travel by myself. Pillow on my lap with a sandwich served by the nicest lady you would ever meet and milk. Awesome. I still have my ticket (I saw it last year somewhere in my drawers) and I think the fare was $12 and change.
I spent the summer mowing yards at .50 cents or some such a yard to finance my trip and visit my Aunts, Uncles and Cousins.