The best month to fly with Flight IW1813 is January and the most expensive month to fly is July. (Average prices, based on 479 datapoints.)
The best day to arrive at Surabaya is Tuesday and it would be best to avoid Sunday, as prices are on average 13.55% higher than on Tuesday. (Average prices, based on 11441495 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 299 datapoints.)