AA cancelled both evening flights from IAH on Friday and booked me on a late Saturday morning flight. I know they fly the same crj700 back and forth from ORD, so this likely helped contribute to the issues. Somehow UA had no problem selling me a ticket and getting me home only an hour after schedule, on a mainline aircraft no less. After some pretty heavy turbulence I experienced the day before on an Eagle flight, enough so to divert to Austin, this was a welcome outcome to the circumstances. I did have to fork over a last minute first fare, but getting home to the family for the weekend is priceless.