Flight Don Mueang International Airport departs from Bangkok Don Mueang International Airport at 12:00 and arrives at Chiang Mai Chiang Mai International Airport at 13:10.
The flighttime is about 1h 10m. The distance travelled ("as the bird flies"): 204 Km. So the average speed is roughly 175 Km.
The best day to arrive at Bangkok is Sunday and it would be best to avoid Tuesday, as prices are on average 77.19% higher than on Sunday. (Average prices, based on 14996229 datapoints.)
We have a lot more statistics for flights DD 128 and between Bangkok and Chiang Mai.