The best month to fly between Surabaya and Banjarmasin is March and the most expensive month to fly is May. (Average prices, based on 3520 datapoints.)
The best day to arrive at Surabaya is Monday and it would be best to avoid Saturday, as prices are on average 9.56% higher than on Monday. (Average prices, based on 63396427 datapoints.)
The best time to fly is at around 15. (Average prices, based on 23522 datapoints.)