Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 19:55 and arrives at Ho Chi Minh City Tan Son Nhat International Airport at 21:25.
The flighttime is about 1h 30m. The distance travelled ("as the bird flies"): 660 Km. So the average speed is roughly 440 Km.
The best day to arrive at Bangkok is Tuesday and it would be best to avoid Sunday, as prices are on average 41.94% higher than on Tuesday. (Average prices, based on 3472143 datapoints.)
We have a lot more statistics for flights VJ 806 and between Bangkok and Ho Chi Minh City.