Flight Incheon International Airport departs from Seoul Incheon International Airport at 10:15 and arrives at Ho Chi Minh City Tan Son Nhat International Airport at 13:35.
The flighttime is about 5h 20m. The distance travelled ("as the bird flies"): 2519 Km. So the average speed is roughly 472 Km.
There is an 2 hour time difference between Seoul and Ho Chi Minh City
The best day to arrive at Seoul is Thursday and it would be best to avoid Friday, as prices are on average 141.95% higher than on Thursday. (Average prices, based on 194697 datapoints.)
We have a lot more statistics for flights KE 5681 and between Seoul and Ho Chi Minh City.