Flight Incheon International Airport departs from Seoul Incheon International Airport at 15:45 and arrives at Tokyo Narita International Airport at 18:25.
The flighttime is about 2h 40m. The distance travelled ("as the bird flies"): 1555 Km. So the average speed is roughly 583 Km.
The best day to arrive at Seoul is Tuesday and it would be best to avoid Friday, as prices are on average 86.81% higher than on Tuesday. (Average prices, based on 6959226 datapoints.)
We have a lot more statistics for flights EY 8454 and between Seoul and Tokyo.
