Flight Hangzhou Xiaoshan International Airport departs from Hangzhou Hangzhou Xiaoshan International Airport at 14:40 and arrives at Osaka Kansai International Airport at 18:15.
The flighttime is about 2h 35m. The distance travelled ("as the bird flies"): 1670 Km. So the average speed is roughly 646 Km.
There is an 1 hour time difference between Hangzhou and Osaka