Flight Tan Son Nhat International Airport departs from Ho Chi Minh City Tan Son Nhat International Airport at 19:10 and arrives at Kunming Wujiaba International Airport at 23:00.
The flighttime is about 2h 50m. The distance travelled ("as the bird flies"): 588 Km. So the average speed is roughly 208 Km.
There is an 1 hour time difference between Ho Chi Minh City and Kunming