Flight Narita International Airport departs from Tokyo Narita International Airport at 13:00 and arrives at Seoul Incheon International Airport at 15:40.
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 Tokyo is Wednesday and it would be best to avoid Monday, as prices are on average 251.43% higher than on Wednesday. (Average prices, based on 4267951 datapoints.)
We have a lot more statistics for flights LJ 218 and between Tokyo and Seoul.
