Originally Posted by
Avroman
PIT suffers from the same thing as CVG. It doesn't have a lot of O/D traffic, is very expensive relative to other options driving distance (think CAK or CLE with PIT; DAY or SDF with CVG) and is just too close to other hubs with better international presence (PHL, JFK, CLT for PIT; DTW, JFK, ATL for CVG.)
Even before the end of Comair, CVG was trying to get Southwest into the airport. But since Southwest serves CMH, DAY (via the AirTran acquisition), IND, LEX and SDF, all within roughly 100 miles of CVG, Southwest isn't there.
I remember DAY as a hub for the original Piedmont. Following the merger that formed USAir(ways?), the company tried operating DAY and PIT but found they couldn't do so. DAY was closed as a hub because it was so close to PIT.
When the new PIT was built, it was designed to be a hub airport. From that point of view, it is a great airport.