Originally Posted by
kenn0223
I always thought it was a bit unusual for a non-hub airport, but the BOS agents use it and there seems to be one or two customers there at any given time.
While it's not a hub, I'd say it is still a major airport for them. BOS and LAX are the only US non-hub airports listed on the "United hubs and key airports" web page, and the terminal map is listed in Hemispheres. It has mainline or UX flights to all the hubs plus LGA, SYR, DCA, LAX, PHX.