Consider staying the night before our flight in one of the airport hotels in Rosemont. Estimated cost for a ride to O'Hare? Are cabs usually available promptly? Sorry about this questions, I've never taken a cab to the airport so far. Just gathering information. I now some offer free shuttle services, but some of the shuttle services get very bad reviews. I can't afford to miss the flight. I need to now my options before deciding to stay at an airport hotel.