The best month to fly between Banjarmasin and Surabaya is May and the most expensive month to fly is April. (Average prices, based on 1541 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 65881359 datapoints.)
The best time to fly is at around 16. (Average prices, based on 21542 datapoints.)