Flight Incheon International Airport departs from Seoul Incheon International Airport at 16:05 and arrives at Osaka Kansai International Airport at 17:50.
The flighttime is about 1h 45m. The distance travelled ("as the bird flies"): 1002 Km. So the average speed is roughly 573 Km.
The best day to arrive at Seoul is Saturday and it would be best to avoid Friday, as prices are on average 241.89% higher than on Saturday. (Average prices, based on 2257224 datapoints.)
We have a lot more statistics for flights OZ 118 and between Seoul and Osaka.