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Ulaanbaatar

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

SEL — UBN
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Seoul to Ulaanbaatar Chinggis Khaan are usually found in March or September, booked 78 days in advance, depart on a Tuesday or Friday and return on a Thursday

Cheap 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 September 17, 2025.

Popular in

October

Cheapest in

March

Average price

$292
Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 12, 2025.

Booking 78 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, September is the cheapest month in which you can book a flight from Seoul to Ulaanbaatar (average of $1,119). Flying from Seoul to Ulaanbaatar in December is currently the most expensive (average of $1,697). 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 September 17, 2025.

One of the essential ways to save on airfare from Seoul to Ulaanbaatar is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 23% 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 September 14, 2025.

Travelers seeking maximum savings on their Seoul to Ulaanbaatar flight should consider departing on Tuesday mornings when fares are most often at their lowest. Saturday afternoons 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 September 17, 2025.
Read reviews from past customers who have flown Korean Air and Asiana Airlines 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
1,140 reviews

Comfort

8.3

Boarding

8.5

Food

8.1

Crew

8.7

Entertainment

8.2

Overall

8.4

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
1,140 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Boarding

8.5

Food

8.1

Crew

8.7

Entertainment

8.2

Overall

8.4

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
8.2
Very good
481 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Boarding

8.5

Food

8.1

Crew

8.7

Entertainment

8.2

Overall

8.4

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 8 inbound flights from Seoul per day from 6 airlines. Ulaanbaatar Chinggis Khaan is conveniently located just 18.6 mi from Ulaanbaatar’s city center.

  • How popular is this Seoul to Ulaanbaatar flight route?

    Within the past month, 30 users have taken a look at flights from Seoul to Ulaanbaatar Chinggis Khaan.

  • 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 $203 on this airline. Additional options worth looking into are Aero Mongolia and Asiana Airlines, starting at $287 and $289 round-trip. Jeju Air is 43% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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: Delta (90%), Jeju Air (86%), MIAT Mongolian( 86%).

  • 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, September is the cheapest month in which you can book a flight from Seoul to Ulaanbaatar (average of $1,119). Flying from Seoul to Ulaanbaatar in December is currently the most expensive (average of $1,697). 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 6 airlines flying from Seoul to Ulaanbaatar

Discover the top 6 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Jeju AirCheapest$203Average$288FlexibilityNo cancel feeOn-timeN/A
Aero MongoliaCheapest$287Average$475FlexibilityNo cancel feeOn-timeN/A
Asiana AirlinesCheapest$289Average$465FlexibilityNo cancel feeOn-time76%
MIAT MongolianCheapest$295Average$392FlexibilityNo cancel feeOn-time63%
T'way AirCheapest$306Average$309FlexibilityNo cancel feeOn-time88%
Korean AirCheapest$314Average$454FlexibilityNo cancel feeOn-time81%

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