Flight Incheon International Airport departs from Seoul Incheon International Airport at 15:35 and arrives at Tokyo Narita International Airport at 18:05.
The flighttime is about 2h 30m. The distance travelled ("as the bird flies"): 1555 Km. So the average speed is roughly 622 Km.
The best day to arrive at Seoul is Monday and it would be best to avoid Wednesday, as prices are on average 88.2% higher than on Monday. (Average prices, based on 6928854 datapoints.)
We have a lot more statistics for flights LJ 211 and between Seoul and Tokyo.
