Please be aware that Jakarta has multiple airports and that these results are for all airports serving the city.
The best month to fly between Jakarta and Singapore is November and the most expensive month to fly is June. (Average prices, based on 50790 datapoints.)
The best day to arrive at Jakarta is Tuesday and it would be best to avoid Wednesday, as prices are on average 10.39% higher than on Tuesday. (Average prices, based on 56463 datapoints.)
The cheapest airline flying from Jakarta to Singapore is Indonesia AirAsia. They are 87% cheaper than Singapore Airlines. (Average prices, based on 50811 datapoints.)
The best time to fly is at around 21. (Average prices, based on 70802 datapoints.)