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 Muscat is April and the most expensive month to fly is September. (Average prices, based on 315 datapoints.)
The best day to arrive at Jakarta is Sunday and it would be best to avoid Tuesday, as prices are on average 12.72% higher than on Sunday. (Average prices, based on 715 datapoints.)