Flight Don Mueang International Airport departs from Bangkok Don Mueang International Airport at 09:45 and arrives at Da Nang Da Nang International Airport at 11:30.
The flighttime is about 1h 45m. The distance travelled ("as the bird flies"): 846 Km. So the average speed is roughly 483 Km.
The best day to arrive at Bangkok is Wednesday and it would be best to avoid Saturday, as prices are on average 91.75% higher than on Wednesday. (Average prices, based on 35046 datapoints.)
We have a lot more statistics for flights FD 636 and between Bangkok and Da Nang.