The best month to fly with Flight IU584 is June and the most expensive month to fly is December. (Average prices, based on 520 datapoints.)
The best day to arrive at Surabaya is Saturday and it would be best to avoid Sunday, as prices are on average 9.31% higher than on Saturday. (Average prices, based on 15090992 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 205 datapoints.)