Flight Kuala Lumpur International Airport departs from Kuala Lumpur Kuala Lumpur International Airport at 23:10 and arrives at London Heathrow Airport at 05:25.
The flighttime is about 13h 15m. The distance travelled ("as the bird flies"): 10913 Km. So the average speed is roughly 824 Km.
There is an 7 hour time difference between Kuala Lumpur and London