I'm talking about the late sixties.  

Often young boys don't pay much attention to fashion.

Here are some photos of passengers from the 1930's to the 1960's, in their finery:

http://www.stylist.co.uk/travel/the-glamourous-golden-age-of-air-travel-aeroplane-plane-1950s-photos-retro

As you can see from the photos from the sixties, all the men are in suits and ties and some women are even wearing hats. (and I mean hats, not baseball caps on backwards)