SGN and WUH are approximately 1,462 miles apart by great-circle distance.
Yes. Roame's current schedule feed shows nonstop service from SGN to WUH.
Airlines represented in the current schedule are China Southern Airlines (CZ).
Aircraft listed in the current schedule include Boeing 737-200 (732), Boeing 737-800 (738), Boeing 737-500 Winglets (73E) and Boeing 737-800 Winglets (73H).