A couple of years ago, United had an intra-europe hub at LHR, and to a much smaller extent CDG. From london they flew 727s to munich, berlin, hamburg, amsterdam, brussels. From paris they flew to geneva and athens (i dont know what kind of equipment was used on those routes). In addition, they used to fly between milan and rome. However, all the flights aforementioned are gone now, sadly. I wonder what UA has done iwth all those expensive slots?!? BTW, DL is the only one ot have an intra-europe "hub" now -- it is at FRA.