Air distance from London, UK to Kuala Lumpur, Malaysia is 6544.4 Miles (10532.1 Kilometers / 5683.1 Nautical Miles).
13 hrs, 35 mins is the flight duration between London and Kuala Lumpur. This is the In-The-Air flight time. You should also add the taxi time, airport wait times and possible delays due to bad weather, etc. for the total flight duration time.