Join Date: Oct 2005
Location: TLV now - formerly LAS
Programs: King of Rental Cars, AA MM Gold, A3 Gold, BA Gold, SK Gold,Virgin Atlantic Gold, Hotel SuperElite
Posts: 7,422
Domestic layovers top out at 4 hours. Your best bet is to book on the last flight of the day on United or AA connecting through ORD and then do standby for the first flight of the day.
Now, as your post has nothing to do with mileage runs, I expect a moderator to close it and note that you should read the stickied threads at the top of the forum.