The best month to fly between Banjarmasin and Surabaya is August and the most expensive month to fly is May. (Average prices, based on 39657 datapoints.)
The best day to arrive at Banjarmasin is Sunday and it would be best to avoid Thursday, as prices are on average 6.25% higher than on Sunday. (Average prices, based on 67208861 datapoints.)
The best time to fly is at around 16. (Average prices, based on 59663 datapoints.)