The best month to fly between Surabaya and Banjarmasin is March and the most expensive month to fly is July. (Average prices, based on 1288 datapoints.)
The best day to arrive at Surabaya is Monday and it would be best to avoid Saturday, as prices are on average 15.79% higher than on Monday. (Average prices, based on 60526043 datapoints.)
The best time to fly is at around 15. (Average prices, based on 21285 datapoints.)