The best month to fly between Banjarmasin and Surabaya is September and the most expensive month to fly is June. (Average prices, based on 76545 datapoints.)
The best day to arrive at Banjarmasin is Sunday and it would be best to avoid Monday, as prices are on average 22.33% higher than on Sunday. (Average prices, based on 65214218 datapoints.)
The best time to fly is at around 16. (Average prices, based on 96549 datapoints.)