Flight Incheon International Airport departs from Seoul Incheon International Airport at 12:50 and arrives at Beijing Beijing Capital International Airport at 14:00.
The flighttime is about 2h 10m. The distance travelled ("as the bird flies"): 1106 Km. So the average speed is roughly 510 Km.
There is an 1 hour time difference between Seoul and Beijing
The best day to arrive at Seoul is Wednesday and it would be best to avoid Sunday, as prices are on average 224.8% higher than on Wednesday. (Average prices, based on 63449 datapoints.)
We have a lot more statistics for flights CA 5004 and between Seoul and Beijing.
