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 Wednesday and it would be best to avoid Thursday, as prices are on average 31.27% higher than on Wednesday. (Average prices, based on 66138644 datapoints.)
The best time to fly is at around 16. (Average prices, based on 21542 datapoints.)