Flight Incheon International Airport departs from Seoul Incheon International Airport at 09:20 and arrives at Osaka Kansai International Airport at 11:20.
The flighttime is about 2h 00m. The distance travelled ("as the bird flies"): 1002 Km. So the average speed is roughly 501 Km.
The best day to arrive at Seoul is Friday and it would be best to avoid Thursday, as prices are on average 164.16% higher than on Friday. (Average prices, based on 1949749 datapoints.)
We have a lot more statistics for flights OZ 118 and between Seoul and Osaka.