Flight Incheon International Airport departs from Seoul Incheon International Airport at 09:45 and arrives at Tokyo Narita International Airport at 12:15.
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 Thursday and it would be best to avoid Friday, as prices are on average 66.76% higher than on Thursday. (Average prices, based on 6967746 datapoints.)
We have a lot more statistics for flights LJ 205 and between Seoul and Tokyo.
