Cheap options Tokyo - Vietnam

[burmans]

Have a friend who is going to Vietnam in December (as are we). His daughter will be in Japan (Tokyo) and he suggested she joins but when they loked for flights they were $1000. I suggested they look for two stage opton as probably cheaper but don't know of any cheap flyers (Asir Asia/Tiger) who fly to Tokyo, any suggestions - she is young so can put up with discomfort for an hour or two!