The only example that I recall of the grass really being greener in another airline did feature Pan Am.
It was in the sixties when turnrounds still permitted crews to eat in airport restaurants. We were enjoying that privilege in a busy Helsinki dining room when we became aware that a hush had suddenly fallen over the entire place.
On looking round we saw a gaggle of Pan Am crew had entered - including two tall blue-eyed blondes with that blue uniform sculpted to their figures. There were guys in the restaurant with their jaws hanging open, forks frozen in space and a wistful look in their eyes.
At this point in proceedings our traffic man appeared to discuss mundane things like weights and fuel. "H-h-have you seen P-P-Pan Am," we stuttered.
"Relax," said he, "They're making a film. The one on the left is Miss Finland 1967, the other is Miss Finland 1966!"