I'm getting near the end of a 3 1/2-hour layover in LA. I tried to slip onto an earlier flight to O'Hare, but they're all full. Mine leaves in about an hour, and it's on a 747-400. I haven't flown a 747 domestically since my family went to Disney World in 1981. My dad and sisters were on a 777 between O'Hare and Denver when we went to Breckinridge for Easter '97. I've not been on anything larger than a 767.
Interestingly, most of the stores in the far concourse where United's regional jets come into LAX are "temporarily closed". One sign cites "diminished air travel". That terminal was pretty dead... I'd heard of such closings before, but had never seen them. Everything at O'Hare has been open and busy every time I've been there.
Dad says the word on the news is that there's delays at O'Hare today because United and American scheduled too many flights. I would not at all be surprised if this was a strategic move to wave in front of the state legislature to get moving with the O'Hare expansion plans. "It's only going to get worse as the economy improves!" Which really is the God's-honest-truth.