Flight Cam Ranh International Airport departs from Nha Trang Cam Ranh International Airport at 10:40 and arrives at Guangzhou Guangzhou Baiyun International Airport at 14:20.
The flighttime is about 2h 40m. The distance travelled ("as the bird flies"): 644 Km. So the average speed is roughly 242 Km.
There is an 1 hour time difference between Nha Trang and Guangzhou