The best month to fly with Flight JT128 is October and the most expensive month to fly is May. (Average prices, based on 891 datapoints.)
The best day to arrive at Jakarta is Saturday and it would be best to avoid Thursday, as prices are on average 5.48% higher than on Saturday. (Average prices, based on 12651373 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 151 datapoints.)