Flight Don Mueang International Airport departs from Bangkok Don Mueang International Airport at 06:10 and arrives at Chiang Rai Mae Fah Luang Chiang Rai International Airport at 07:25.
The flighttime is about 1h 15m. The distance travelled ("as the bird flies"): 144 Km. So the average speed is roughly 115 Km.
The best day to arrive at Bangkok is Wednesday and it would be best to avoid Friday, as prices are on average 212.5% higher than on Wednesday. (Average prices, based on 3855570 datapoints.)
We have a lot more statistics for flights DD 100 and between Bangkok and Chiang Rai.