Flight Incheon International Airport departs from Seoul Incheon International Airport at 18:30 and arrives at Singapore Changi Airport at 23:40.
The flighttime is about 6h 10m. The distance travelled ("as the bird flies"): 2923 Km. So the average speed is roughly 474 Km.
There is an 1 hour time difference between Seoul and Singapore
The best day to arrive at Seoul is Thursday and it would be best to avoid Sunday, as prices are on average 110.39% higher than on Thursday. (Average prices, based on 277461 datapoints.)
We have a lot more statistics for flights KE 645 and between Seoul and Singapore.
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