Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 21:50 and arrives at Seoul Gimpo International Airport at 07:05.
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 June. (Average prices, based on 5219 datapoints.)
The best day to arrive at Jakarta is Wednesday and it would be best to avoid Friday, as prices are on average 25.57% higher than on Wednesday. (Average prices, based on 21283069 datapoints.)
We have a lot more statistics for flights KE 628 and between Jakarta and Seoul.