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 Luwuk is October and the most expensive month to fly is June. (Average prices, based on 339 datapoints.)
The best day to arrive at Jakarta is Saturday and it would be best to avoid Wednesday, as prices are on average 19.25% higher than on Saturday. (Average prices, based on 335 datapoints.)