Flight Phnom Penh International Airport departs from Phnom Penh Phnom Penh International Airport at 21:55 and arrives at Shenzhen Shenzhen Bao'an International Airport at 01:40.
The flighttime is about 2h 45m. The distance travelled ("as the bird flies"): 1073 Km. So the average speed is roughly 390 Km.
There is an 1 hour time difference between Phnom Penh and Shenzhen