Flight Incheon International Airport departs from Seoul Incheon International Airport at 14:55 and arrives at Jakarta Soekarno–Hatta International Airport at 20:10.
The flighttime is about 7h 15m. The distance travelled ("as the bird flies"): 2960 Km. So the average speed is roughly 408 Km.
There is an 2 hour time difference between Seoul and Jakarta
The best day to arrive at Seoul is Thursday and it would be best to avoid Saturday, as prices are on average 37.16% higher than on Thursday. (Average prices, based on 12619489 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 518 datapoints.)
We have a lot more statistics for flights OZ 761 and between Seoul and Jakarta.
