What are UA's major and mini hubs?
Major: IAD, DEN, SFO, LAX, MIA, ORD, NRT, LHR
Mini: BOS, SEA (are any of the NYC airports hubs of UA)
I'm sure UA can consolidate hubs domestically and build more international hubs (where flights produce more margins).
How about HKG, PEK, TPE or CDG?