Flight Don Mueang International Airport departs from Bangkok Don Mueang International Airport at 06:40 and arrives at Hanoi Noi Bai International Airport at 08:30.
The flighttime is about 1h 50m. The distance travelled ("as the bird flies"): 606 Km. So the average speed is roughly 331 Km.
The best day to arrive at Bangkok is Thursday and it would be best to avoid Saturday, as prices are on average 169.94% higher than on Thursday. (Average prices, based on 360497 datapoints.)
We have a lot more statistics for flights QZ 642 and between Bangkok and Hanoi.
