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 Langkawi is March and the most expensive month to fly is November. (Average prices, based on 881 datapoints.)
The best day to arrive at Kuala Lumpur is Tuesday and it would be best to avoid Saturday, as prices are on average 96.23% higher than on Tuesday. (Average prices, based on 1002 datapoints.)
The cheapest airline flying from Kuala Lumpur to Langkawi is AirAsia. They are 41% cheaper than FireFly. (Average prices, based on 893 datapoints.)