Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 06:10 and arrives at Surat Surat International Airport at 08:00.
The flighttime is about 7h 20m. The distance travelled ("as the bird flies"): 531 Km. So the average speed is roughly 72 Km.
There is an 5.5 hour time difference between Delhi and Surat