The best month to fly with Flight JT838 is August and the most expensive month to fly is December. (Average prices, based on 6324 datapoints.)
The best day to arrive at Surabaya is Saturday and it would be best to avoid Sunday, as prices are on average 5.01% higher than on Saturday. (Average prices, based on 16739138 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 730 datapoints.)