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 Thursday and it would be best to avoid Saturday, as prices are on average 21.9% higher than on Thursday. (Average prices, based on 66908547 datapoints.)
The best time to fly is at around 16. (Average prices, based on 59659 datapoints.)