Flight Chiang Mai International Airport departs from Chiang Mai Chiang Mai International Airport at 18:45 and arrives at Bangkok Don Mueang International Airport at 19:55.
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 Chiang Mai is Thursday and it would be best to avoid Sunday, as prices are on average 62.35% higher than on Thursday. (Average prices, based on 9377058 datapoints.)
We have a lot more statistics for flights DD 137 and between Chiang Mai and Bangkok.