Flight Chiang Mai International Airport departs from Chiang Mai Chiang Mai International Airport at 21:50 and arrives at Shanghai Pudong International Airport at 03:05.
The flighttime is about 4h 15m. The distance travelled ("as the bird flies"): 2571 Km. So the average speed is roughly 605 Km.
There is an 1 hour time difference between Chiang Mai and Shanghai