Please be aware that Jakarta has multiple airports and that these results are for all airports serving the city.
The best month to fly between Jakarta and Banjarmasin is August and the most expensive month to fly is May. (Average prices, based on 23540 datapoints.)
The best day to arrive at Jakarta is Saturday and it would be best to avoid Monday, as prices are on average 8.22% higher than on Saturday. (Average prices, based on 52696 datapoints.)
The cheapest airline flying from Jakarta to Banjarmasin is Lion Air. They are 59% cheaper than Garuda Indonesia. (Average prices, based on 23550 datapoints.)
The best time to fly is at around 13. (Average prices, based on 43549 datapoints.)