The best month to fly between Surabaya and Kuala Lumpur is January and the most expensive month to fly is June. (Average prices, based on 14639 datapoints.)
The best day to arrive at Surabaya is Tuesday and it would be best to avoid Sunday, as prices are on average 15.88% higher than on Tuesday. (Average prices, based on 14639 datapoints.)
The best time to fly is at around 5. (Average prices, based on 29094 datapoints.)
