Flight Incheon International Airport departs from Seoul Incheon International Airport at 16:20 and arrives at Tokyo Narita International Airport at 18:40.
The flighttime is about 2h 20m. The distance travelled ("as the bird flies"): 1555 Km. So the average speed is roughly 666 Km.
The best day to arrive at Seoul is Thursday and it would be best to avoid Saturday, as prices are on average 202.4% higher than on Thursday. (Average prices, based on 6738660 datapoints.)
We have a lot more statistics for flights 7C 1121 and between Seoul and Tokyo.
