The best month to fly between Banjarmasin and Surabaya is September and the most expensive month to fly is June. (Average prices, based on 108569 datapoints.)
The best day to arrive at Banjarmasin is Monday and it would be best to avoid Saturday, as prices are on average 13.53% higher than on Monday. (Average prices, based on 64164306 datapoints.)
The best time to fly is at around 17. (Average prices, based on 126269 datapoints.)