Flight Changi Airport departs from Singapore Changi Airport at 01:10 and arrives at Seoul Gimpo International Airport at 08:45.
The flighttime is about 6h 35m. The distance travelled ("as the bird flies"): 2961 Km. So the average speed is roughly 450 Km.
There is an 1 hour time difference between Singapore and Seoul
The best day to arrive at Singapore is Sunday and it would be best to avoid Saturday, as prices are on average 77% higher than on Sunday. (Average prices, based on 411071 datapoints.)
We have a lot more statistics for flights KE 646 and between Singapore and Seoul.
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