Flight Siem Reap-Angkor International Airport departs from Siem Reap Siem Reap-Angkor International Airport at 19:35 and arrives at Guangzhou Guangzhou Baiyun International Airport at 23:20.
The flighttime is about 2h 45m. The distance travelled ("as the bird flies"): 1109 Km. So the average speed is roughly 403 Km.
There is an 1 hour time difference between Siem Reap and Guangzhou