Please be aware that Jakarta and Jakarta has multiple airports and that these results are for all airports serving the city.
The best month to fly between Jakarta and Jakarta is February and the most expensive month to fly is March. (Average prices, based on 7683 datapoints.)
The best day to arrive at Jakarta is Thursday and it would be best to avoid Tuesday, as prices are on average 9.5% higher than on Thursday. (Average prices, based on 6200 datapoints.)