The best month to fly between Banjarmasin and Surabaya is January and the most expensive month to fly is November. (Average prices, based on 1461 datapoints.)
The best day to arrive at Banjarmasin is Sunday and it would be best to avoid Tuesday, as prices are on average 32.5% higher than on Sunday. (Average prices, based on 64948255 datapoints.)
The best time to fly is at around 16. (Average prices, based on 21464 datapoints.)