Flight Guangzhou Baiyun International Airport departs from Guangzhou Guangzhou Baiyun International Airport at 13:25 and arrives at Phnom Penh Phnom Penh International Airport at 15:15.
The flighttime is about 2h 50m. The distance travelled ("as the bird flies"): 1030 Km. So the average speed is roughly 364 Km.
There is an 1 hour time difference between Guangzhou and Phnom Penh
