Join Date: Dec 2002
Location: Washington, DC, Chapel Hill, NC (RDU)
Programs: DL Plat (won't hit DM again) 2MM (2.5), HH Gold, PC Gold, Hyatt Plat
Posts: 5,724
I flew LHR-HAN-SGN-OZ and back on a great VN business fare a few years back. Base was $2200 and adding a week stopover in HAN added about $200.
Search google flights and you may find something through EU. I think VN either flies or codeshares with other SkyTeam carriers from LON, AMS, CDG, and seasonal I think PRG (largest Vietnamese expat community in Europe except for France, I think).