Flight Chiang Mai International Airport departs from Chiang Mai Chiang Mai International Airport at 21:05 and arrives at Xi an Xi'an Xianyang International Airport at 01:05.
The flighttime is about 3h 00m. The distance travelled ("as the bird flies"): 1156 Km. So the average speed is roughly 385 Km.
There is an 1 hour time difference between Chiang Mai and Xi an