Flight Kansai International Airport departs from Osaka Kansai International Airport at 17:10 and arrives at Shenzhen Shenzhen Bao'an International Airport at 21:10.
The flighttime is about 5h 00m. The distance travelled ("as the bird flies"): 2487 Km. So the average speed is roughly 497 Km.
There is an 1 hour time difference between Osaka and Shenzhen