Flight Chiang Mai International Airport departs from Chiang Mai Chiang Mai International Airport at 18:50 and arrives at Guangzhou Guangzhou Baiyun International Airport at 22:25.
The flighttime is about 2h 35m. The distance travelled ("as the bird flies"): 1599 Km. So the average speed is roughly 619 Km.
There is an 1 hour time difference between Chiang Mai and Guangzhou
