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 Monday and it would be best to avoid Friday, as prices are on average 6.52% higher than on Monday. (Average prices, based on 66586708 datapoints.)
The best time to fly is at around 16. (Average prices, based on 59661 datapoints.)