Find Asiana Airlines(OZ) flights from Hanoi to Seoul

At the moment, you can catch a nonstop flight from Hanoi to Seoul with the following airlines, including: VietJet Air Jeju Air Parata Air Asiana Airlines Vietnam Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

It takes about 4 hours 13 minutes to fly from Hanoi to Seoul.

By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Hanoi to Seoul is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

Based on Trip.com data in the past 4 weeks, there is 30 flight per week flying from Hanoi to Seoul. You can check the weekly schedule for popular airlines on this route below: Korean Air: S/M/T/W/T/F/S -- KE442 (12:28) Korean Air: S/M/T/W/T/F/S -- KE5690 (10:35)

The cheapest months to fly from Hanoi to Seoul is September, when demand for travel is lower.

After crunching the numbers on our October flight calendar, it's currently cheapest to fly from Hanoi to Seoul on October 17, 2026 with VietJet Air, with prices starting at US$146.

You can land at any one of the following hubs in Seoul: Gimpo International Airport (GMP), and Incheon International Airport (ICN). Flying from Noi Bai International Airport to Incheon International Airport (HAN-ICN) is by far the most common option on this route.

The time difference between Seoul and Hanoi is 2h.

Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.