Flight Haneda Airport departs from Tokyo Haneda Airport at 09:20 and arrives at Seoul Incheon International Airport at 11:45.
The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 1487 Km. So the average speed is roughly 615 Km.
The best day to arrive at Tokyo is Sunday and it would be best to avoid Saturday, as prices are on average 352.5% higher than on Sunday. (Average prices, based on 1254345 datapoints.)
We have a lot more statistics for flights KE 2106 and between Tokyo and Seoul.
AUD
