Flight Incheon International Airport departs from Seoul Incheon International Airport at 06:50 and arrives at Kuala Lumpur Kuala Lumpur International Airport at 12:30.
The flighttime is about 6h 40m. The distance travelled ("as the bird flies"): 3061 Km. So the average speed is roughly 459 Km.
There is an 1 hour time difference between Seoul and Kuala Lumpur
The best day to arrive at Seoul is Friday and it would be best to avoid Wednesday, as prices are on average 201.15% higher than on Friday. (Average prices, based on 694025 datapoints.)
We have a lot more statistics for flights OD 821 and between Seoul and Kuala Lumpur.
THB