Flight Melbourne Airport departs from Melbourne Melbourne Airport at 15:25 and arrives at Ho Chi Minh City Tan Son Nhat International Airport at 21:00.
The flighttime is about 9h 35m. The distance travelled ("as the bird flies"): 5004 Km. So the average speed is roughly 522 Km.
There is an 4 hour time difference between Melbourne and Ho Chi Minh City