Cheap Flights from Seoul to Ulaanbaatar from S$ 145

Frequently Asked Questions

• Which airlines offer the cheapest flights from Seoul (SEL) to Ulaanbaatar (ULN)?

  Based on Trip.com data, Jeju Air offers one-way fares as low as S$ 145 on Cheapest nonstop routes (e.g. ICN to UBN on Mon, Sep 28), while Jeju Air offers Cheapest nonstop round-trips from S$ 291 departing on Sat, Sep 26 and returning on Tue, Sep 29.

• Which airlines offer direct flights from Seoul to Ulaanbaatar?

  At the moment, you can catch a direct flight from Seoul to Ulaanbaatar with the following airlines, including: Miat Mongolian Airlines Aero Mongolia Asiana Airlines T'Way Air Jeju 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 Seoul (SEL) to Ulaanbaatar (ULN)?

  It takes about 3 hours 35 minutes to fly from Seoul (SEL) to Ulaanbaatar (ULN).

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

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seoul to Ulaanbaatar 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 Seoul to Ulaanbaatar?

  Based on Trip.com data in the past 4 weeks, there is 45 flight per week flying from Seoul to Ulaanbaatar. You can check the weekly schedule for popular airlines on this route below: Miat Mongolian Airlines: S/M/T/W/T/F/S -- OM308 (00:11)

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

  To find best deals on flights from Seoul to Ulaanbaatar, 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 Mon, Sep 28, with one-way flights priced at just S$ 145.
  · 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 Ulaanbaatar travel is around July.
  · Get exclusive promo codes for Trip.com app users.

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

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

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

  After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Seoul to Ulaanbaatar on August 31, 2026 with T'Way Air, with prices starting at S$ 153.

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

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

• What is the time difference between Seoul and Ulaanbaatar?

  The time difference between Ulaanbaatar and Seoul is 1h.

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

  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 Seoul to Ulaanbaatar?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Seoul to Ulaanbaatar is S$ 422. Fares vary by travel date, airline and availability.

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

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Seoul to Ulaanbaatar is S$ 823. The final price depends on the outbound and return dates, airline and fare conditions.

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

  Enter Seoul and Ulaanbaatar, 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 Seoul to Ulaanbaatar route?

  Jeju Air, T'Way Air and Spring Airlinesare the most popular budget airlines flying from Seoul to Ulaanbaatar. Check baggage, seat and payment fees before comparing the final price.