The whole RAH thing is a bit confusing to most people, but who cares, they are all the same piece of crap!
Republic Airways Holdings, Inc. owns three regional airlines...
Chautauqua Airlines- American Connection (ERJ140s)
- Continental Express (ERJ145s, CRJ2s (going away)
- Delta Connection (ERJ145s; I think all the 135s are gone)
- United Express (ERJ145s)
- USAirways Express (ERJ145s)
Republic Airlines- Midwest Connect (EMB-170s, soon E190s)
- USAirways Express (EMB170/175s)
Shuttle America- Delta Connection (EMB175s)
- United Express (EMB170s)
- Mokulele Airlines (EMB170)