Flight Xinzheng Airport departs from Zhengzhou Xinzheng Airport at 11:20 and arrives at Osaka Kansai International Airport at 18:00.The flight has a short stop at Shanghai.
The flighttime is about 5h 40m. The distance travelled ("as the bird flies"): 2380 Km. So the average speed is roughly 420 Km.
There is an 1 hour time difference between Zhengzhou and Osaka