My friend SHUPirate1 and I were doing some research on inter-hub flights operated by the "Big Six" US airlines this evening and we came across somewhat of an oddity.
UA operates flights 382 ORD-IAD and 383 IAD-ORD with a B747-400. To our knowledge this is the only US domestic flight operated by a 747-400, and this 747 apparently does not continue on to another destination. Is there actually demand for a 747 flight from IAD to ORD? What are the load factors on this route? It seems to me that flying a 744 on such a route, unless there is a heck of a lot of connecting traffic or other conditions that I am not aware of, would be extremely uneconomic.
I will however have to take note of this flight and perhaps try to book it some time in the future, before it gets deleted from the schedules, which seems likely...