Cheap Flights from Ulaanbaatar to Seoul from $121

Frequently Asked Questions

• What are the cheapest flights from Ulaanbaatar to Seoul (ULN-SEL)?

  Based on Trip.com data, Jeju Air offers one-way fares as low as $121 on Cheapest nonstop routes (e.g. UBN to ICN on Thu, Mar 19), while Jeju Air offers Cheapest nonstop round-trips from $233 departing on Tue, Apr 7 and returning on Tue, Apr 14.

• Which airlines offer direct flights from Ulaanbaatar to Seoul?

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

• How long does it take to fly from Ulaanbaatar (ULN) to Seoul (SEL) and what is the distance?

  It takes around 3 hours 14 minutes to fly from Ulaanbaatar (ULN) to Seoul (SEL).

• When is the best time to book flights from Ulaanbaatar 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 Ulaanbaatar 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 Ulaanbaatar to Seoul?

  Based on Trip.com data in the past 4 weeks, there is 37 flight per week flying from Ulaanbaatar to Seoul. You can check the weekly schedule for popular airlines on this route below: Miat Mongolian Airlines: S/M/T/W/T/F/S -- OM301 (08:00) Korean Air: S/-/T/W/T/F/S -- KE2042 (12:31) Korean Air: S/M/T/W/T/F/S -- KE5868 (08:00)

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

  To find best deals on flights from Ulaanbaatar 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 Thu, Mar 19, with one-way flights priced at just $121.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Jeju 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 August.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Ulaanbaatar (ULN) to Seoul (SEL) the cheapest?

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

• Which upcoming date is cheapest to fly from Ulaanbaatar to Seoul on?

  After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Ulaanbaatar to Seoul on February 19, 2026 with Jeju Air, with prices starting at $266.

• Which airports can I fly to for Seoul from Ulaanbaatar?

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

• Is there any time difference between Ulaanbaatar and Seoul?

  The time difference between Seoul and Ulaanbaatar is 1h.

• How do I change or cancel my ticket from Ulaanbaatar to Seoul?

  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.