Dexter...
Actually, Thanksgiving air travel was down a decent % from last year and in fact, a number of years prior and that goes for all airlines!
My friends at AA/UAL and NW all noticed much quieter terminals, lighter load factors etc....so it was not just US. Matter of fact I was at ORD on Wed. and noticed it myself.
I think that the near-constant pre-holiday drumbeat of doom-and-gloom media hype about how bad it was going to be was a deciding factor for a whole lot of those who were on the fence about "should we drive or should we fly?" Bet the highways weren't less crowded at all.