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 Sorong is April and the most expensive month to fly is December. (Average prices, based on 3999 datapoints.)
The best day to arrive at Jakarta is Wednesday and it would be best to avoid Monday, as prices are on average 12.74% higher than on Wednesday. (Average prices, based on 4421 datapoints.)