Flight Incheon International Airport departs from Seoul Incheon International Airport at 10:35 and arrives at Jakarta Soekarno–Hatta International Airport at 16:00.
The flighttime is about 7h 25m. The distance travelled ("as the bird flies"): 2960 Km. So the average speed is roughly 399 Km.
There is an 2 hour time difference between Seoul and Jakarta
The best month to arrive at Seoul is June and the most expensive month to fly is February. (Average prices, based on 518 datapoints.)
The best day to arrive at Seoul is Monday and it would be best to avoid Tuesday, as prices are on average 39.05% higher than on Monday. (Average prices, based on 11683155 datapoints.)
We have a lot more statistics for flights KE 5643 and between Seoul and Jakarta.