Flight Kansai International Airport departs from Osaka Kansai International Airport at 12:40 and arrives at Seoul Incheon International Airport at 14:35.
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 day to arrive at Osaka is Monday and it would be best to avoid Saturday, as prices are on average 300.44% higher than on Monday. (Average prices, based on 5021352 datapoints.)
We have a lot more statistics for flights MM 705 and between Osaka and Seoul.