Flight Noi Bai International Airport departs from Hanoi Noi Bai International Airport at 16:00 and arrives at Da Nang Da Nang International Airport at 17:30.
The flighttime is about 1h 30m. The distance travelled ("as the bird flies"): 315 Km. So the average speed is roughly 210 Km.
The best day to arrive at Hanoi is Sunday and it would be best to avoid Saturday, as prices are on average 30.53% higher than on Sunday. (Average prices, based on 1023360 datapoints.)
We have a lot more statistics for flights VN 171 and between Hanoi and Da Nang.