I can't remember the year but flying a Braniff 707 from old Love Field to Houston Hobby through notorious Texas thunderstorms was as bad as I've ever experienced.

We were at least two hours late leaving Dallas and the attendants served drinks while we sat on the runway (when was the last time you ever had that experience, if ever) for two hours. We took off to the north and I do not recall ever feeling turning south to Houston because it was so turbulent you couldn't tell banking from flipping sideways lol.

Second would be a Continental 727 from Seattle over the rockies to Denver. Nuff said. I was a smoker in those days and you could smoke. I had to borrow a cig from my seat mate as I ran out

I'd put those two up against flying through a Typhoon into Fiju anyday on old Pan Am on way to Sydney.