The best month to fly between Surabaya and Banjarmasin is March and the most expensive month to fly is April. (Average prices, based on 765 datapoints.)
The best day to arrive at Surabaya is Thursday and it would be best to avoid Sunday, as prices are on average 13.53% higher than on Thursday. (Average prices, based on 62588956 datapoints.)
The best time to fly is at around 15. (Average prices, based on 20766 datapoints.)