Flight Noi Bai International Airport departs from Hanoi Noi Bai International Airport at 12:35 and arrives at Singapore Changi Airport at 17:05.
The flighttime is about 3h 30m. The distance travelled ("as the bird flies"): 599 Km. So the average speed is roughly 171 Km.
There is an 1 hour time difference between Hanoi and Singapore
The best day to arrive at Hanoi is Saturday and it would be best to avoid Wednesday, as prices are on average 674.94% higher than on Saturday. (Average prices, based on 200905 datapoints.)
We have a lot more statistics for flights SQ 191 and between Hanoi and Singapore.