Flight Incheon International Airport departs from Seoul Incheon International Airport at 07:35 and arrives at Ho Chi Minh City Tan Son Nhat International Airport at 11:05.
The flighttime is about 5h 30m. The distance travelled ("as the bird flies"): 2519 Km. So the average speed is roughly 458 Km.
There is an 2 hour time difference between Seoul and Ho Chi Minh City
The best day to arrive at Seoul is Monday and it would be best to avoid Friday, as prices are on average 90.79% higher than on Monday. (Average prices, based on 187507 datapoints.)
We have a lot more statistics for flights OZ 731 and between Seoul and Ho Chi Minh City.