There are a couple of reasons:
is a much larger city than PIT
. Even with WN
moving in, there is plenty of room for both airlines.
's GMSA is one of the few in the US that is shrinking
. Part of the reason for this is the industrial base of the city is shriveling up. Steel and other manufacturing industries are dying out in this country, and they refuse to innovate. So they dry up and PIT
sufferes for it.
3) Consolidation of resources. By scheduling more flights out of PHL
and fewer flights out of PIT
, they can use the resources already available at PHL
and reduce the number of resources required at PIT
. They save money in terms of carrying costs, maintenance, and leases.
are very close together. Having two hubs so close (less than 300 miles) for a traditional hub/network carrier is absurd, a waste. I wouldn't be surprised, if US manages to recover, if they put a new hub somewhere further west in a growing metro, like IND
5) International traffic out of PHL
, due to the city being the #5 GMSA in the country and having a massive financial and commercial base (though not quite as big as NYC's), is much greater than the traffic out of PIT
But this all comes down to one major idea: Consolidation of resources. US can't afford to keep all it has. It has to make cuts somewhere, and PIT
makes the most sense.
Those who fail to learn history are doomed to repeat it in summer school.