It's not necessarily the home base/headquarters of an airline, but that is often the case. At least one example would be US when its hq was at DCA
(Alexandria, VA) when its hubs at the time were at PIT
, and PHL
Hubs are very large stations for airlines. Usually they consist of at least 200 flights (O&D and connection). They are mostly connection centers for regional feed. Connecting flights take passengers to other larger domestic markets as well as international markets. There could be as many as 100 flights to several large markets served with mainline aircraft, and have as many as triple that number of regional feed from other surrounding large markets as well as some smaller regional markets. In a nutshell, a hub is a very large market for an airline; that given airline runs a massive operation at a hub location: DFW
. That is a list of the hub airports I know of. Oh, forgot one more, CLE
... I believe that of all of these airports, CLE
is the smallest of the hubs with roughly 220 flights.
Another thing regarding hub airports, they are mostly the international gateways to some international markets. BOS
is one exception here, as is BWI
could be considered to be a "hub" for WN
, but WN
doesn't follow the hub-and-spoke system. Atleast it doesn't appear that way...
Something else to add here, PIT back in 2000/2001 was a massive hub for US. US Airways operated over 500 flights from PIT, with the majority of that being regional or express service to other surrounding large markets such as STL, MCI, DFW, DTW as well as local regional service to places like DuBois, Johnstown, State College, and RDU. US drastically cut PIT service down to 170-some flights, no longer qualifying PIT as a hub, as now it is mostly O&D based. PIT has lost just about all of its regional feed to support some of the mainline routes, especially to international markets like LGW, FRA, and CDG.
I hope this helps...
[Edited 2006-06-27 02:03:56]
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