Flight Incheon International Airport departs from Seoul Incheon International Airport at 18:25 and arrives at Shanghai Pudong International Airport at 19:55.
The flighttime is about 2h 30m. The distance travelled ("as the bird flies"): 649 Km. So the average speed is roughly 260 Km.
There is an 1 hour time difference between Seoul and Shanghai
The best day to arrive at Seoul is Sunday and it would be best to avoid Saturday, as prices are on average 370.37% higher than on Sunday. (Average prices, based on 4590597 datapoints.)
We have a lot more statistics for flights FM 828 and between Seoul and Shanghai.
