Flight Sydney Airport departs from Sydney Sydney Airport at 12:00 and arrives at Ho Chi Minh City Tan Son Nhat International Airport at 21:00.The flight has a short stop at Melbourne.
The flighttime is about 12h 00m. The distance travelled ("as the bird flies"): 5581 Km. So the average speed is roughly 465 Km.
There is an 3 hour time difference between Sydney and Ho Chi Minh City