Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 23:35 and arrives at Ho Chi Minh City Tan Son Nhat International Airport at 06:25.
The flighttime is about 5h 20m. The distance travelled ("as the bird flies"): 3245 Km. So the average speed is roughly 608 Km.
There is an 1.5 hour time difference between Delhi and Ho Chi Minh City