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 Medan is November and the most expensive month to fly is January. (Average prices, based on 1981 datapoints.)
The best day to arrive at Kuala Lumpur is Wednesday and it would be best to avoid Sunday, as prices are on average 40.72% higher than on Wednesday. (Average prices, based on 7980 datapoints.)
The cheapest airline flying from Kuala Lumpur to Medan is Batik Air. They are 51% cheaper than MasWings. (Average prices, based on 1996 datapoints.)
The best time to fly is at around 22. (Average prices, based on 9608 datapoints.)