Flight Guangzhou Baiyun International Airport departs from Guangzhou Guangzhou Baiyun International Airport at 08:25 and arrives at Osaka Kansai International Airport at 13:00.
The flighttime is about 3h 35m. The distance travelled ("as the bird flies"): 2527 Km. So the average speed is roughly 705 Km.
There is an 1 hour time difference between Guangzhou and Osaka