Flight Kuala Lumpur International Airport departs from Kuala Lumpur Kuala Lumpur International Airport at 09:50 and arrives at Tokyo Narita International Airport at 18:05.
The flighttime is about 7h 15m. The distance travelled ("as the bird flies"): 4552 Km. So the average speed is roughly 628 Km.
There is an 1 hour time difference between Kuala Lumpur and Tokyo