Please be aware that Kuala Lumpur and Jakarta has multiple airports and that these results are for all airports serving the city.
The best month to fly between Kuala Lumpur and Jakarta is May and the most expensive month to fly is June. (Average prices, based on 87375 datapoints.)
The best day to arrive at Kuala Lumpur is Wednesday and it would be best to avoid Sunday, as prices are on average 26.72% higher than on Wednesday. (Average prices, based on 33456 datapoints.)
The cheapest airline flying from Kuala Lumpur to Jakarta is Indonesia AirAsia. They are 77% cheaper than Oman Air. (Average prices, based on 87417 datapoints.)
The best time to fly is at around 6. (Average prices, based on 107408 datapoints.)