Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 02:15 and arrives at Seoul Gimpo International Airport at 11:30.
The flighttime is about 7h 15m. The distance travelled ("as the bird flies"): 2997 Km. So the average speed is roughly 413 Km.
There is an 2 hour time difference between Jakarta and Seoul
The best month to arrive at Jakarta is November and the most expensive month to fly is October. (Average prices, based on 1022 datapoints.)
The best day to arrive at Jakarta is Wednesday and it would be best to avoid Thursday, as prices are on average 157.04% higher than on Wednesday. (Average prices, based on 25938406 datapoints.)
We have a lot more statistics for flights KE 438 and between Jakarta and Seoul.
