The best month to fly with Flight IW1821 is April and the most expensive month to fly is October. (Average prices, based on 213 datapoints.)
The best day to arrive at Kupang is Friday and it would be best to avoid Sunday, as prices are on average 14.65% higher than on Friday. (Average prices, based on 4527489 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 489 datapoints.)