Flight Don Mueang International Airport departs from Bangkok Don Mueang International Airport at 15:55 and arrives at Da Nang Da Nang International Airport at 17:40.
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 Thursday and it would be best to avoid Sunday, as prices are on average 93.02% higher than on Thursday. (Average prices, based on 38014 datapoints.)
We have a lot more statistics for flights FD 638 and between Bangkok and Da Nang.