The best month to fly between Banjarmasin and Surabaya is March and the most expensive month to fly is June. (Average prices, based on 2264 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 68284376 datapoints.)
The best time to fly is at around 16. (Average prices, based on 22269 datapoints.)