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

UBN — SEL
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Ulaanbaatar Chinggis Khaan to Seoul are usually found in November or September, booked 70 days in advance, depart on a Thursday or Sunday and return on a Tuesday

Cheap flight deals from Ulaanbaatar to Seoul

Discover tips and strategies to find the most affordable flight options for your journey from Ulaanbaatar (UBN) to Seoul (SEL). 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

August

Cheapest in

November

Average price

$336
Highest demand for flights based on searches. 4% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 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 Ulaanbaatar to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Ulaanbaatar 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 Ulaanbaatar to Seoul

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

Use this chart to determine the optimal time to book a round-trip flight from Ulaanbaatar to Seoul. Price data was last updated on September 12, 2025.

The price you pay for your flight from Ulaanbaatar to Seoul may vary depending on when you book. For the best chance of a lower fare, look to book 70 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, February is the cheapest month in which you can book a flight from Ulaanbaatar to Seoul (average of $989). Flying from Ulaanbaatar to Seoul in December is currently the most expensive (average of $1,621). 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 UBN to SEL?

Find hourly flight availability from Ulaanbaatar to Seoul. 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.

Unlike at noon, when flights are generally more expensive, you can save up to 55% on flights from Ulaanbaatar to Seoul by exploring options for tickets in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Ulaanbaatar to Seoul. Price data was last updated on December 16, 2024.

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

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated September 17, 2025.
See what other customers who have flown with Korean Air and Asiana Airlines from Ulaanbaatar to Seoul have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,140 reviews

Overall

8.4

Boarding

8.5

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,140 reviews
Korean Air
8.4
Very good
1,140 reviews

Overall

8.4

Boarding

8.5

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Asiana Airlines
8.2
Very good
481 reviews
Korean Air
8.4
Very good
1,140 reviews

Overall

8.4

Boarding

8.5

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Ulaanbaatar to Seoul. 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 from for flights from Ulaanbaatar to Seoul?

    If you book a flight to Seoul from Ulaanbaatar, you will be flying from Chinggis Khaan, which is the city’s only airport. Ulaanbaatar Chinggis Khaan (UBN) is located 18.6 mi from the center of Ulaanbaatar. There are 8 flights from Chinggis Khaan to Seoul per day from 5 different airlines.

  • How popular is this Ulaanbaatar to Seoul flight route?

    This flight path from Ulaanbaatar Chinggis Khaan to Seoul was viewed by 68 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Jeju Air, at $165, was found to be the cheapest airline from Ulaanbaatar to Seoul.Alternate airlines to your destination round-trip include Aero Mongolia and MIAT Mongolian. These flights start at 54% lower than the current average price 3 months from now.

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

    Before booking your flight to Seoul from Ulaanbaatar, check out the most reliable airlines to get you to your destination on time: Delta (97%), Korean Air (92%), MIAT Mongolian( 91%).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ulaanbaatar to Seoul 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 Ulaanbaatar to Seoul?

    Currently, February is the cheapest month in which you can book a flight from Ulaanbaatar to Seoul (average of $989). Flying from Ulaanbaatar to Seoul in December is currently the most expensive (average of $1,621). 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 Ulaanbaatar to Seoul

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

Top 5 airlines flying from Ulaanbaatar to Seoul

Discover the top 5 airlines that operate flights from Ulaanbaatar to Seoul. 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$165Average$280FlexibilityNo cancel feeOn-timeN/A
Aero MongoliaCheapest$272Average$321FlexibilityNo cancel feeOn-timeN/A
MIAT MongolianCheapest$306Average$373FlexibilityNo cancel feeOn-time63%
Korean AirCheapest$328Average$385FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$373Average$442FlexibilityNo cancel feeOn-time76%

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