Flight Incheon International Airport departs from Seoul Incheon International Airport at 22:00 and arrives at Ho Chi Minh City Tan Son Nhat International Airport at 01:55.
The flighttime is about 5h 55m. The distance travelled ("as the bird flies"): 2519 Km. So the average speed is roughly 426 Km.
There is an 2 hour time difference between Seoul and Ho Chi Minh City
The best day to arrive at Seoul is Wednesday and it would be best to avoid Friday, as prices are on average 420.16% higher than on Wednesday. (Average prices, based on 181376 datapoints.)
We have a lot more statistics for flights TW 121 and between Seoul and Ho Chi Minh City.