Flight Don Mueang International Airport departs from Bangkok Don Mueang International Airport at 07:30 and arrives at Chiang Mai Chiang Mai International Airport at 08:45.
The flighttime is about 1h 15m. The distance travelled ("as the bird flies"): 204 Km. So the average speed is roughly 163 Km.
The best day to arrive at Bangkok is Wednesday and it would be best to avoid Saturday, as prices are on average 57.6% higher than on Wednesday. (Average prices, based on 14826760 datapoints.)
We have a lot more statistics for flights AK 3445 and between Bangkok and Chiang Mai.