Flight Incheon International Airport departs from Seoul Incheon International Airport at 18:40 and arrives at Ho Chi Minh City Tan Son Nhat International Airport at 22:05.
The flighttime is about 5h 25m. The distance travelled ("as the bird flies"): 2519 Km. So the average speed is roughly 465 Km.
There is an 2 hour time difference between Seoul and Ho Chi Minh City
The best day to arrive at Seoul is Tuesday and it would be best to avoid Monday, as prices are on average 78.95% higher than on Tuesday. (Average prices, based on 184270 datapoints.)
We have a lot more statistics for flights KE 475 and between Seoul and Ho Chi Minh City.