Flight Guangzhou Baiyun International Airport departs from Guangzhou Guangzhou Baiyun International Airport at 12:40 and arrives at Seoul Incheon International Airport at 17:15.
The flighttime is about 3h 35m. The distance travelled ("as the bird flies"): 1648 Km. So the average speed is roughly 460 Km.
There is an 1 hour time difference between Guangzhou and Seoul
The best day to arrive at Guangzhou is Friday and it would be best to avoid Sunday, as prices are on average 125.92% higher than on Friday. (Average prices, based on 3471363 datapoints.)
We have a lot more statistics for flights KE 866 and between Guangzhou and Seoul.