Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 07:00 and arrives at Guwahati Lokpriya Gopinath Bordoloi International Airport at 09:30.
The flighttime is about 2h 30m. The distance travelled ("as the bird flies"): 1609 Km. So the average speed is roughly 644 Km.
The best day to arrive at Delhi is Tuesday and it would be best to avoid Sunday, as prices are on average 53.96% higher than on Tuesday. (Average prices, based on 700648 datapoints.)
We have a lot more statistics for flights 6E 2939 and between Delhi and Guwahati.
THB