Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 21:20 and arrives at Guwahati Lokpriya Gopinath Bordoloi International Airport at 23:30.
The flighttime is about 2h 10m. The distance travelled ("as the bird flies"): 1609 Km. So the average speed is roughly 743 Km.
The best day to arrive at Delhi is Sunday and it would be best to avoid Thursday, as prices are on average 38.53% higher than on Sunday. (Average prices, based on 699272 datapoints.)
We have a lot more statistics for flights 6E 889 and between Delhi and Guwahati.