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 Saturday and it would be best to avoid Thursday, as prices are on average 10.32% higher than on Saturday. (Average prices, based on 67568265 datapoints.)
The best time to fly is at around 16. (Average prices, based on 59663 datapoints.)