well you shouldnt see any skywest 900's at ORD since there are no 900's in the United paint. Youll see a skywest 900 in the Delta colors passing through from ATL, but that parks way on the other side of the airport.

With preferential bidding, you can any combination of flying. a lot of people preferred the 700 but that was something you could put in your preferences for bidding if you ony wanted the 200.

sometimes skywest would replace a leg that is normally a 200 with a 700, and vice versa, due to some circumstances. the 700 normally does more of the "long haul" stuff if you wanna call it that haha. like DEN - Birmingham, ORD-JAX, etc is in the 700.

Apparantly the salt lake guys were doing some east coast to west coast flying a lot, but now that skw has a ATL base that may change