Flight Kansai International Airport departs from Osaka Kansai International Airport at 09:55 and arrives at Kuala Lumpur Kuala Lumpur International Airport at 15:45.
The flighttime is about 6h 50m. The distance travelled ("as the bird flies"): 3970 Km. So the average speed is roughly 581 Km.
There is an 1 hour time difference between Osaka and Kuala Lumpur