Originally Posted by
warreng24
The 1139 DEN-ORD is UA546.
According to pda.continental.com, that is planned to be operated by aircraft #6444, which translates to N644UA.
If we look up N644UA on flightaware.com it appears that the aircraft is currently inbound from LHR.
http://flightaware.com/live/flight/N644UA
The upcoming schedule for N644UA is pretty much unpredictable. However, I suspect she'll stay domestic until your DEN-ORD flight on Sunday. UA has no scheduled 763 flights to the NYC area if that makes you feel any better.
I was more worried about a 767 going to IAD -- UA does run 767's from its other US hubs to IAD.
FYI, FlightAware says that N644UA will be going LHR-ORD-CDG-ORD-LHR over the next two days, with ORD-LHR being my flight tomorrow. So it won't be flying as UA 546 DEN-ORD if the site is to be believed.