Flight Chiang Mai International Airport departs from Chiang Mai Chiang Mai International Airport at 19:35 and arrives at Hong Kong Hong Kong International Airport at 23:15.The flight has a short stop at Hong Kong.
The flighttime is about 2h 40m. The distance travelled ("as the bird flies"): 1665 Km. So the average speed is roughly 624 Km.
There is an 1 hour time difference between Chiang Mai and Hong Kong