The best month to fly between Surabaya and Banjarmasin is August and the most expensive month to fly is May. (Average prices, based on 28041 datapoints.)
The best day to arrive at Surabaya is Wednesday and it would be best to avoid Monday, as prices are on average 40.8% higher than on Wednesday. (Average prices, based on 61860718 datapoints.)
The best time to fly is at around 15. (Average prices, based on 48039 datapoints.)