Please be aware that Jakarta and Kuala Lumpur has multiple airports and that these results are for all airports serving the city.
The best month to fly between Jakarta and Kuala Lumpur is October and the most expensive month to fly is December. (Average prices, based on 137995 datapoints.)
The best day to arrive at Jakarta is Tuesday and it would be best to avoid Friday, as prices are on average 25.69% higher than on Tuesday. (Average prices, based on 63944 datapoints.)
The cheapest airline flying from Jakarta to Kuala Lumpur is KLM. They are 85% cheaper than Garuda Indonesia. (Average prices, based on 138036 datapoints.)
The best time to fly is at around 21. (Average prices, based on 158032 datapoints.)