Flight Chiang Mai International Airport departs from Chiang Mai Chiang Mai International Airport at 22:30 and arrives at Bangkok Don Mueang International Airport at 23:45.
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 Chiang Mai is Thursday and it would be best to avoid Tuesday, as prices are on average 291.8% higher than on Thursday. (Average prices, based on 11054684 datapoints.)
We have a lot more statistics for flights W1 5018 and between Chiang Mai and Bangkok.
