Cheap Flights from Hanoi to Seoul from S$ 126

Frequently Asked Questions

• Which airlines offer the cheapest flights from Hanoi (HAN) to Seoul (SEL)?

  Based on Trip.com data, VietJet Air offers one-way fares as low as S$ 126 on Cheapest nonstop routes (e.g. HAN to ICN on Sun, Oct 4), while VietJet Air offers Cheapest nonstop round-trips from S$ 221 departing on Wed, Oct 7 and returning on Wed, Oct 14.

• Which airlines offer direct flights from Hanoi to Seoul?

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

• How long is a flight from Hanoi (HAN) to Seoul (SEL)?

  It takes about 4 hours 15 minutes to fly from Hanoi (HAN) to Seoul (SEL).

• When is the best time to book flights 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.

• How many flights are there per week from Hanoi to Seoul?

  Based on Trip.com data in the past 4 weeks, there is 47 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 -- KE5690 (10:33)

• How can I find the best deals on flights from Hanoi to Seoul?

  To find best deals on flights from Hanoi to Seoul, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sun, Oct 4, with one-way flights priced at just S$ 126.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is VietJet Air.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Seoul travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When is the best time to book a flight from Hanoi to Seoul to get the best price?

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

• Which upcoming date is the cheapest for flights from Hanoi to Seoul?

  After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Hanoi to Seoul on August 26, 2026 with Jeju Air, with prices starting at S$ 127.

• Which airports can I fly through when travelling to Seoul from Hanoi?

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

• What is the time difference between Hanoi and Seoul?

  The time difference between Seoul and Hanoi is 2h.

• How can I change or cancel my flight ticket from Hanoi to Seoul?

  Tickets can only be changed or cancelled 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.

• What is the average cost of a one-way flight from Hanoi to Seoul?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Hanoi to Seoul is S$ 423. Fares vary by travel date, airline and availability.

• What is the average cost of a round-trip flight from Hanoi to Seoul?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Hanoi to Seoul is S$ 451. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from Hanoi to Seoul on Trip.com?

  Enter Hanoi and Seoul, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveller details and complete payment to receive your confirmation.

• Are there budget airlines on the Hanoi to Seoul route?

  VietJet Air, Jeju Air and Parata Airare the most popular budget airlines flying from Hanoi to Seoul. Check baggage, seat and payment fees before comparing the final price.