Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 00:05 and arrives at Ho Chi Minh City Tan Son Nhat International Airport at 06:20.
The flighttime is about 4h 45m. The distance travelled ("as the bird flies"): 3245 Km. So the average speed is roughly 683 Km.
There is an 1.5 hour time difference between Delhi and Ho Chi Minh City