Flight Incheon International Airport departs from Seoul Incheon International Airport at 18:40 and arrives at Singapore Changi Airport at 23:55.
The flighttime is about 6h 15m. The distance travelled ("as the bird flies"): 2923 Km. So the average speed is roughly 468 Km.
There is an 1 hour time difference between Seoul and Singapore
The best day to arrive at Seoul is Wednesday and it would be best to avoid Sunday, as prices are on average 114.06% higher than on Wednesday. (Average prices, based on 922649 datapoints.)
We have a lot more statistics for flights KE 645 and between Seoul and Singapore.
