Flight Kuala Lumpur International Airport departs from Kuala Lumpur Kuala Lumpur International Airport at 22:50 and arrives at London Heathrow Airport at 05:25.
The flighttime is about 13h 35m. The distance travelled ("as the bird flies"): 10913 Km. So the average speed is roughly 803 Km.
There is an 7 hour time difference between Kuala Lumpur and London
