Join Date: Jan 2005
Location: New York, NY
Programs: UA, AA, DL, Hertz, Avis, National, Hyatt, Hilton, SPG, Marriott
Posts: 10,071
EWR and IAH are also (arguably) the most complicated hub operations in terms of terminals, transfer options, layout, etc. DEN, IAD and SFO (ORD to a lesser extent) are much simpler by comparison.