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Ulaanbaatar to Seoul in March 2027 UBN → GMP, ICN

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

For departures in March 2027, the cheapest return found recently is $397 with MIAT Mongolian Airlines, 8 Mar 2027 – 23 Mar 2027, found today. The cheapest one-way found recently is $229 with Jeju Air, 25 Mar 2027, found 3 days ago.

Return

In March 2027, the cheapest return fare on each of 12 departure dates is usually $400 to $414. 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, 2 are usually cheaper than March 2027.

Cheapest return found recently

$397

8 Mar 2027 – 23 Mar 2027 · MIAT Mongolian Airlines

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

out nonstop, back nonstop

found today

See prices for these datesCheck today's price

It is also the cheapest return we hold, of any age.

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The cheapest dates in March 2027

DatesFromAirlineStopsFound
8 Mar 2027 – 23 Mar 2027$397MIAT Mongolian Airlinesout nonstop, back nonstopfound todaySee prices for these dates
7 Mar 2027 – 29 Mar 2027$398MIAT Mongolian Airlinesout nonstop, back nonstopfound yesterdaySee prices for these dates
19 Mar 2027 – 21 Mar 2027$399MIAT Mongolian Airlinesout nonstop, back nonstopfound 5 days agoSee prices for these dates
22 Mar 2027 – 31 Mar 2027$400MIAT Mongolian Airlinesout nonstop, back nonstopfound 6 days agoSee prices for these dates
25 Mar 2027 – 3 Apr 2027$400MIAT Mongolian Airlinesout nonstop, back nonstopfound 6 days agoSee prices for these dates

Every date we hold

12 departure dates

7 Mar 2027 – 29 Mar 2027: $398, found yesterday8 Mar 2027 – 23 Mar 2027: $397, found today10 Mar 2027 – 10 Apr 2027: $450, found 3 days ago11 Mar 2027 – 10 Apr 2027: $432, found 3 days ago19 Mar 2027 – 21 Mar 2027: $399, found 5 days ago20 Mar 2027 – 2 Apr 2027: $418, found 3 days ago21 Mar 2027 – 3 Apr 2027: $402, found 3 days ago22 Mar 2027 – 31 Mar 2027: $400, found 6 days ago25 Mar 2027 – 3 Apr 2027: $400, found 6 days ago27 Mar 2027 – 3 Apr 2027: $400, found 6 days ago29 Mar 2027 – 7 Apr 2027: $413, found yesterday31 Mar 2027 – 12 Apr 2027: $410, found 2 days agoMar
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
7 Mar 2027 – 29 Mar 2027$398MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound yesterdaySee prices for these dates
8 Mar 2027 – 23 Mar 2027$397MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound todaySee prices for these dates
10 Mar 2027 – 10 Apr 2027$450MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 3 days agoSee prices for these dates
11 Mar 2027 – 10 Apr 2027$432Jeju AirChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 3 days agoSee prices for these dates
19 Mar 2027 – 21 Mar 2027$399MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 5 days agoSee prices for these dates
20 Mar 2027 – 2 Apr 2027$418MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 3 days agoSee prices for these dates
21 Mar 2027 – 3 Apr 2027$402MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 3 days agoSee prices for these dates
22 Mar 2027 – 31 Mar 2027$400MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 6 days agoSee prices for these dates
25 Mar 2027 – 3 Apr 2027$400MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 6 days agoSee prices for these dates
27 Mar 2027 – 3 Apr 2027$400MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 6 days agoSee prices for these dates
29 Mar 2027 – 7 Apr 2027$413Aero MongoliaChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound yesterdaySee prices for these dates
31 Mar 2027 – 12 Apr 2027$410Aero MongoliaChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)out nonstop, back nonstopfound 2 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 datesEvery date in January 2027
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 dates
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 March 2027, the cheapest one-way fare on each of 7 departure dates is usually $231 to $234. 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 March 2027.

Cheapest one-way found recently

$229

25 Mar 2027 · Jeju Air

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

nonstop

found 3 days ago

Open this tripCheck today's price

Cheapest we hold, of any age

$187

9 Mar 2027 · Jeju Air

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

nonstop

found 6 days ago

Open this tripCheck today's price

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The cheapest dates in March 2027

DatesFromAirlineStopsFound
9 Mar 2027$187Jeju Airnonstopfound 6 days agoOpen this trip
25 Mar 2027$229Jeju Airnonstopfound 3 days agoOpen this trip
19 Mar 2027$232MIAT Mongolian Airlinesnonstopfound 6 days agoOpen this trip
8 Mar 2027$233MIAT Mongolian Airlinesnonstopfound 6 days agoOpen this trip
28 Mar 2027$234Aero Mongolianonstopfound 4 days agoOpen this trip

Every date we hold

7 departure dates

8 Mar 2027: $233, found 6 days ago9 Mar 2027: $187, found 6 days ago19 Mar 2027: $232, found 6 days ago25 Mar 2027: $229, found 3 days ago28 Mar 2027: $234, found 4 days ago30 Mar 2027: $237, found 4 days ago31 Mar 2027: $234, found 5 days agoMar
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
8 Mar 2027$233MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)nonstopfound 6 days agoOpen this trip
9 Mar 2027$187Jeju AirChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)nonstopfound 6 days agoOpen this trip
19 Mar 2027$232MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)nonstopfound 6 days agoOpen this trip
25 Mar 2027$229Jeju AirChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)nonstopfound 3 days agoOpen this trip
28 Mar 2027$234Aero MongoliaChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)nonstopfound 4 days agoOpen this trip
30 Mar 2027$237MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)nonstopfound 4 days agoOpen this trip
31 Mar 2027$234Aero MongoliaChinggis Khaan International Airport (UBN) → Incheon International Airport (ICN)nonstopfound 5 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 tripEvery date in January 2027
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 trip
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