I had four flights on United this year. All four were late, employees were crabby planes were dirty and gate areas stunk. And they fly CRJs on 3+ hr flights. That is one messed up airline. My friend is DM on DL and 1K on UA and she absolutely hates UA (but from what I understand her client books her on UA a lot). I've heard stories that make my head spin. Sorry you're stuck in IAH!