re: Best way to fly with a suit?

Pants are easy - just fold them up and when you get to hotel, hot shower steam them (as others have said) or just iron them and hang them.

I often will wear the jacket on the plane. When I get on the plane, I take it off and put it folded once long-wise on top of my carryon bag in the overhead compartment. Yes, they could put it in the closet near the front of the plane, but I'm always afraid I would forget about it in the bustle of getting off the airplane.

And to the guy commenting about TSA not harrasing you as much if you are wearing a suit jacket... absolutely. Not only them but the airline people are a lot nicer to me when I wear a jacket, maybe they think I'm one of their high-paying customers!