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Ulaanbaatar to Seoul in January 2027 UBN → GMP, ICN

Chinggis Khaan International Airport (UBN) → Gimpo International Airport (GMP), Incheon International Airport (ICN)

For departures in January 2027, the cheapest return found recently is $401 with Aero Mongolia, 4 Jan 2027 – 13 Jan 2027, found yesterday. The cheapest one-way found recently is $233 with Aero Mongolia, 4 Jan 2027, found yesterday.

Return

In January 2027, the cheapest return fare on each of 13 departure dates is usually $401 to $456. Across all 116 departure dates we hold on this route, it is usually $398 to $421. Of the 10 months with enough return fares to compare, 4 are usually cheaper than January 2027.

Cheapest return found recently

$401

4 Jan 2027 – 13 Jan 2027 · Aero Mongolia

Chinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)

out nonstop, back nonstop

found yesterday

See prices for these datesCheck today's price

Cheapest we hold, of any age

$390

20 Jan 2027 – 30 Jan 2027 · Aero Mongolia

Chinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)

out nonstop, back nonstop

found 3 days ago

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The cheapest dates in January 2027

DatesFromAirlineStopsFound
20 Jan 2027 – 30 Jan 2027$390Aero Mongoliaout nonstop, back nonstopfound 3 days agoSee prices for these dates
25 Jan 2027 – 8 Feb 2027$400Aero Mongoliaout nonstop, back nonstopfound 4 days agoSee prices for these dates
4 Jan 2027 – 13 Jan 2027$401Aero Mongoliaout nonstop, back nonstopfound yesterdaySee prices for these dates
24 Jan 2027 – 9 Feb 2027$401MIAT Mongolian Airlinesout nonstop, back nonstopfound yesterdaySee prices for these dates
2 Jan 2027 – 9 Jan 2027$406Aero Mongoliaout nonstop, back nonstopfound 5 days agoSee prices for these dates

Every date we hold

13 departure dates

1 Jan 2027 – 9 Jan 2027: $510, found 5 days ago2 Jan 2027 – 9 Jan 2027: $406, found 5 days ago3 Jan 2027 – 11 Jan 2027: $491, found 3 days ago4 Jan 2027 – 13 Jan 2027: $401, found yesterday5 Jan 2027 – 14 Jan 2027: $456, found 5 days ago9 Jan 2027 – 13 Jan 2027: $410, found 5 days ago12 Jan 2027 – 18 Jan 2027: $473, found 2 days ago13 Jan 2027 – 19 Jan 2027: $436, found 2 days ago14 Jan 2027 – 20 Jan 2027: $406, found 2 days ago17 Jan 2027 – 24 Jan 2027: $417, found 4 days ago20 Jan 2027 – 30 Jan 2027: $390, found 3 days ago24 Jan 2027 – 9 Feb 2027: $401, found yesterday25 Jan 2027 – 8 Feb 2027: $400, found 4 days agoJan
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Jan 2027 – 9 Jan 2027$510Aero MongoliaChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out 2 stops, back nonstopfound 5 days agoSee prices for these dates
2 Jan 2027 – 9 Jan 2027$406Aero MongoliaChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 5 days agoSee prices for these dates
3 Jan 2027 – 11 Jan 2027$491MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 3 days agoSee prices for these dates
4 Jan 2027 – 13 Jan 2027$401Aero MongoliaChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound yesterdaySee prices for these dates
5 Jan 2027 – 14 Jan 2027$456MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 5 days agoSee prices for these dates
9 Jan 2027 – 13 Jan 2027$410Aero MongoliaChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 5 days agoSee prices for these dates
12 Jan 2027 – 18 Jan 2027$473MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 2 days agoSee prices for these dates
13 Jan 2027 – 19 Jan 2027$436MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 2 days agoSee prices for these dates
14 Jan 2027 – 20 Jan 2027$406Aero MongoliaChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 2 days agoSee prices for these dates
17 Jan 2027 – 24 Jan 2027$417MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 4 days agoSee prices for these dates
20 Jan 2027 – 30 Jan 2027$390Aero MongoliaChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 3 days agoSee prices for these dates
24 Jan 2027 – 9 Feb 2027$401MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound yesterdaySee prices for these dates
25 Jan 2027 – 8 Feb 2027$400Aero MongoliaChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 4 days agoSee prices for these dates

Which month looks cheapest?

December 2026 is the cheapest month — from $282.

October 2026From $39611 departure dates23 Oct – 8 Dec · found todaySee prices for these datesEvery date in October 2026
November 2026From $29120 departure dates26 Nov – 29 Nov · found 5 days agoSee prices for these datesEvery date in November 2026
December 2026From $282Cheapest seen23 departure dates8 Dec – 15 Dec · found 7 hours agoSee prices for these datesEvery date in December 2026
January 2027From $39013 departure dates20 Jan 2027 – 30 Jan 2027 · found 3 days agoSee prices for these dates
February 2027From $4017 departure dates1 Feb 2027 – 3 Mar 2027 · found 3 days agoSee prices for these datesEvery date in February 2027
March 2027From $39712 departure dates8 Mar 2027 – 23 Mar 2027 · found todaySee prices for these datesEvery date in March 2027
April 2027From $4039 departure dates24 Apr 2027 – 3 May 2027 · found 5 days agoSee prices for these datesEvery date in April 2027
May 2027From $4109 departure dates27 May 2027 – 27 Jun 2027 · found 4 days agoSee prices for these datesEvery date in May 2027
June 2027From $4034 departure dates1 Jun 2027 – 2 Jul 2027 · found 5 days agoSee prices for these dates
July 2027From $4095 departure dates14 Jul 2027 – 26 Jul 2027 · found 5 days agoSee prices for these datesEvery date in July 2027
August 2027From $4111 departure date27 Aug 2027 – 1 Sept 2027 · found 5 days agoSee prices for these dates
September 2027From $4012 departure dates16 Sept 2027 – 30 Sept 2027 · found 5 days agoSee prices for these dates

One-way

In January 2027, the cheapest one-way fare on each of 3 departure dates is usually $231 to $237. Across all 51 departure dates we hold on this route, it is usually $197 to $235. Of the 7 months with enough one-way fares to compare, 3 are usually cheaper than January 2027.

Cheapest one-way found recently

$233

4 Jan 2027 · Aero Mongolia

Chinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)

nonstop

found yesterday

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Cheapest we hold, of any age

$229

16 Jan 2027 · Aero Mongolia

Chinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)

nonstop

found 5 days ago

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The cheapest dates in January 2027

DatesFromAirlineStopsFound
16 Jan 2027$229Aero Mongolianonstopfound 5 days agoOpen this trip
4 Jan 2027$233Aero Mongolianonstopfound yesterdayOpen this trip
25 Jan 2027$241MIAT Mongolian Airlinesnonstopfound 2 days agoOpen this trip

Every date we hold

3 departure dates

4 Jan 2027: $233, found yesterday16 Jan 2027: $229, found 5 days ago25 Jan 2027: $241, found 2 days agoJan
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
4 Jan 2027$233Aero MongoliaChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)nonstopfound yesterdayOpen this trip
16 Jan 2027$229Aero MongoliaChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)nonstopfound 5 days agoOpen this trip
25 Jan 2027$241MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)nonstopfound 2 days agoOpen this trip

Which month looks cheapest?

December 2026 is the cheapest month — from $133.

October 2026From $2061 departure date27 Oct · found 6 days agoOpen this tripEvery date in October 2026
November 2026From $14313 departure dates26 Nov · found yesterdayOpen this tripEvery date in November 2026
December 2026From $133Cheapest seen12 departure dates8 Dec · found 4 hours agoOpen this tripEvery date in December 2026
January 2027From $2293 departure dates16 Jan 2027 · found 5 days agoOpen this trip
February 2027From $2273 departure dates27 Feb 2027 · found yesterdayOpen this tripEvery date in February 2027
March 2027From $1877 departure dates9 Mar 2027 · found 6 days agoOpen this tripEvery date in March 2027
April 2027From $2304 departure dates3 Apr 2027 · found todayOpen this tripEvery date in April 2027
June 2027From $2401 departure date21 Jun 2027 · found 2 days agoOpen this trip
July 2027From $2317 departure dates22 Jul 2027 · found todayOpen this tripEvery date in July 2027

Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work