Please be aware that Tokyo and Jakarta has multiple airports and that these results are for all airports serving the city.
The best month to fly between Tokyo and Jakarta is June and the most expensive month to fly is December. (Average prices, based on 4636 datapoints.)
The best day to arrive at Tokyo is Thursday and it would be best to avoid Sunday, as prices are on average 19.8% higher than on Thursday. (Average prices, based on 4591 datapoints.)
The cheapest airline flying from Tokyo to Jakarta is Garuda Indonesia. They are 47% cheaper than All Nippon Airways. (Average prices, based on 4642 datapoints.)