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 September and the most expensive month to fly is April. (Average prices, based on 25464 datapoints.)
The best day to arrive at Jakarta is Friday and it would be best to avoid Sunday, as prices are on average 10.88% higher than on Friday. (Average prices, based on 26881 datapoints.)
The cheapest airline flying from Jakarta to Banjarmasin is Lion Air. They are 67% cheaper than Garuda Indonesia. (Average prices, based on 25478 datapoints.)
The best time to fly is at around 10. (Average prices, based on 45472 datapoints.)