Flight Tan Son Nhat International Airport departs from Ho Chi Minh City Tan Son Nhat International Airport at 11:30 and arrives at Bangkok Suvarnabhumi Airport at 13:10.
The flighttime is about 1h 40m. The distance travelled ("as the bird flies"): 660 Km. So the average speed is roughly 396 Km.
The best day to arrive at Ho Chi Minh City is Saturday and it would be best to avoid Wednesday, as prices are on average 132.99% higher than on Saturday. (Average prices, based on 1158100 datapoints.)
We have a lot more statistics for flights VN 605 and between Ho Chi Minh City and Bangkok.