The best month to fly between Surabaya and Banjarmasin is August and the most expensive month to fly is May. (Average prices, based on 28041 datapoints.)
The best day to arrive at Surabaya is Sunday and it would be best to avoid Friday, as prices are on average 15.45% higher than on Sunday. (Average prices, based on 61604125 datapoints.)
The best time to fly is at around 15. (Average prices, based on 48040 datapoints.)