Flight Incheon International Airport departs from Seoul Incheon International Airport at 15:20 and arrives at Osaka Kansai International Airport at 17:15.
The flighttime is about 1h 55m. The distance travelled ("as the bird flies"): 1002 Km. So the average speed is roughly 523 Km.
The best month to arrive at Seoul is July and the most expensive month to fly is December. (Average prices, based on 21480 datapoints.)
The best day to arrive at Seoul is Sunday and it would be best to avoid Wednesday, as prices are on average 140.94% higher than on Sunday. (Average prices, based on 1913619 datapoints.)
We have a lot more statistics for flights KE 725 and between Seoul and Osaka.