Flight Incheon International Airport departs from Seoul Incheon International Airport at 16:45 and arrives at Tokyo Narita International Airport at 19:10.
The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 1555 Km. So the average speed is roughly 643 Km.
The best day to arrive at Seoul is Monday and it would be best to avoid Sunday, as prices are on average 63.41% higher than on Monday. (Average prices, based on 6966713 datapoints.)
We have a lot more statistics for flights RS 703 and between Seoul and Tokyo.
