Flight Narita International Airport departs from Tokyo Narita International Airport at 10:50 and arrives at Jakarta Soekarno–Hatta International Airport at 16:55.
The flighttime is about 8h 05m. The distance travelled ("as the bird flies"): 4356 Km. So the average speed is roughly 539 Km.
There is an 2 hour time difference between Tokyo and Jakarta
The best month to arrive at Tokyo is September and the most expensive month to fly is January. (Average prices, based on 422 datapoints.)
The best day to arrive at Tokyo is Thursday and it would be best to avoid Wednesday, as prices are on average 79.6% higher than on Thursday. (Average prices, based on 11454799 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 345 datapoints.)
We have a lot more statistics for flights JL 725 and between Tokyo and Jakarta.