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Ulaanbaatar

Cheap flights from Seoul (SEL) to Ulaanbaatar (UBN)

SEL — UBN
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
1 adult, Economy
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Cheapflights Tip: The best prices from Seoul to Ulaanbaatar Chinggis Khaan are usually found in March or April, booked 88 days in advance, depart on a Thursday or Tuesday and return on a Thursday

Find flight deals from Seoul to Ulaanbaatar

Discover tips and strategies to find the most affordable flight options for your journey from Seoul (SEL) to Ulaanbaatar (UBN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

October

Cheapest in

March

Average price

$356
Provider with most accurate pricing for Seoul (SEL)-Ulaanbaatar Chinggis Khaan flight deals.
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Provider most trusted by Cheapflights users for Seoul (SEL)-Ulaanbaatar Chinggis Khaan flights.
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Highest demand for flights based on searches. 3% potential increase in price ($13 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in February 2026
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Compare providers for flights from Seoul to Ulaanbaatar

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seoul to Ulaanbaatar in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy2 starsTrust Score*3 stars
MytripPrice Accuracy2 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seoul-Ulaanbaatar flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seoul-Ulaanbaatar flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seoul-Ulaanbaatar flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seoul-Ulaanbaatar flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seoul-Ulaanbaatar flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seoul to Ulaanbaatar

Have a flexible travel schedule? Discover the best time to fly to Ulaanbaatar from Seoul with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seoul to Ulaanbaatar

How far ahead should I book a flight from Seoul to Ulaanbaatar?

Use this chart to determine the optimal time to book a round-trip flight from Seoul to Ulaanbaatar. Price data was last updated on February 6, 2026.

Booking 88 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seoul to Ulaanbaatar. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seoul to Ulaanbaatar?

Currently, April is the cheapest month in which you can book a flight from Seoul to Ulaanbaatar (average of $152). Flying from Seoul to Ulaanbaatar in July is currently the most expensive (average of $297). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEL to UBN?

Find hourly flight availability from Seoul to Ulaanbaatar. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 13, 2026.

One of the essential ways to save on airfare from Seoul to Ulaanbaatar is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 20% on airfare.

What is the cheapest day to fly from Seoul to Ulaanbaatar?

Use this chart to determine the cheapest time to fly round-trip from Seoul to Ulaanbaatar. Price data was last updated on February 7, 2026.

Travelers seeking maximum savings on their Seoul to Ulaanbaatar flight should consider departing on Tuesday mornings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Ulaanbaatar

Get insights into the airlines that provide service to Ulaanbaatar. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ulaanbaatar. Reviews last updated February 13, 2026.
Read reviews from past customers who have flown Korean Air, Asiana Airlines, and Jeju Air from Seoul to Ulaanbaatar. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,191 reviews

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,191 reviews
Korean Air
8.4
Very good
1,191 reviews

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Asiana Airlines
8.1
Very good
505 reviews
Korean Air
8.4
Very good
1,191 reviews

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Jeju Air
7.6
Good
36 reviews
Korean Air
8.4
Very good
1,191 reviews

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

Find useful and relevant information for your journey from Seoul to Ulaanbaatar. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ulaanbaatar from Seoul?

    Most people fly into Ulaanbaatar Chinggis Khaan (UBN) if they book a flight to Ulaanbaatar from Seoul. On average, Chinggis Khaan has 7 inbound flights from Seoul per day from 5 airlines. Ulaanbaatar Chinggis Khaan is conveniently located just 18.6 mi from Ulaanbaatar’s city center.

  • What are the cheapest airlines flying from Seoul to Ulaanbaatar round-trip?

    Our cheapest airline available from Seoul to Ulaanbaatar is Jeju Air. Our recent data shows that you can find tickets from as low as $190 on this airline. Additional options worth looking into are Asiana Airlines and Aero Mongolia, starting at $234 and $283 round-trip. Jeju Air is 47% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seoul to Ulaanbaatar one-way?

    To fly one-way, consider booking your trip with Jeju Air, which is currently one of the cheapest options available, starting at $74. Hahn Air Systems flights start at $92 while deals on Air China start at $98 one-way.

  • What are the most reliable airlines from Seoul to Ulaanbaatar?

    Before booking your flight to Ulaanbaatar from Seoul, check out the most reliable airlines to get you to your destination on time: MIAT Mongolian (73%), Korean Air (72%), Delta( 68%).

  • Can I find deals for flights from Seoul to Ulaanbaatar that include hotel bookings?

    Yes. In addition to deals on Seoul to Ulaanbaatar flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seoul to Ulaanbaatar?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seoul to Ulaanbaatar.

  • Can I find deals for business class flights from Seoul to Ulaanbaatar?

    Yes. Cheapflights offers flight deals from Seoul to Ulaanbaatar by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seoul to Ulaanbaatar?

    Currently, April is the cheapest month in which you can book a flight from Seoul to Ulaanbaatar (average of $152). Flying from Seoul to Ulaanbaatar in July is currently the most expensive (average of $297). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Seoul to Ulaanbaatar

See prices for flight routes from nearby airports that may be better suited for you.
Incheon Intl to Ulaanbaatar flights

Top 5 airlines flying from Seoul to Ulaanbaatar

Discover the top 5 airlines that operate flights from Seoul to Ulaanbaatar. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
Jeju AirCheapest$190Average$277FlexibilityNo cancel feeOn-timeN/A
Asiana AirlinesCheapest$234Average$465FlexibilityNo cancel feeOn-time76%
Aero MongoliaCheapest$283Average$379FlexibilityNo cancel feeOn-timeN/A
MIAT MongolianCheapest$298Average$402FlexibilityNo cancel feeOn-time63%
Korean AirCheapest$369Average$485FlexibilityNo cancel feeOn-time81%

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