Flight Dehradun Airport departs from Dehradun Dehradun Airport at 15:20 and arrives at Delhi Indira Gandhi International Airport at 16:25.
The flighttime is about 1h 05m. The distance travelled ("as the bird flies"): 125 Km. So the average speed is roughly 115 Km.
The best day to arrive at Dehradun is Wednesday and it would be best to avoid Monday, as prices are on average 136.2% higher than on Wednesday. (Average prices, based on 59151 datapoints.)
We have a lot more statistics for flights UK 618 and between Dehradun and Delhi.