Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 03:00 and arrives at Rome Leonardo da Vinci–Fiumicino Airport at 08:10.
The flighttime is about 8h 40m. The distance travelled ("as the bird flies"): 7253 Km. So the average speed is roughly 837 Km.
There is an 3.5 hour time difference between Delhi and Rome