Please be aware that Kuala Lumpur has multiple airports and that these results are for all airports serving the city.
The best month to fly between Kuala Lumpur and Hong Kong is July and the most expensive month to fly is April. (Average prices, based on 249 datapoints.)
The best day to arrive at Kuala Lumpur is Saturday and it would be best to avoid Thursday, as prices are on average 73.49% higher than on Saturday. (Average prices, based on 254 datapoints.)
The cheapest airline flying from Kuala Lumpur to Hong Kong is AirAsia. They are 62% cheaper than MasWings. (Average prices, based on 258 datapoints.)
The best time to fly is at around 7. (Average prices, based on 936 datapoints.)