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Flights between Seoul (ICN) and Ulaanbaatar (ULN)

Incheon International Airport, South Korea ↔ Buyant-Ukhaa International Airport, Mongolia

A direct route between Seoul and Ulaanbaatar appears in the OpenFlights route network.

Confirming who flies ICN–ULN

We're verifying which airlines currently operate ICN–ULN. Current operators will appear here as our data refreshes.

Distance
1,971 km
1,225 miles
Est. flight time
2h 58m
great-circle estimate
Time difference
~1h
varies with DST
View this route on the live map →Search fares on Skyscanner ↗

Climate

Typical monthly temperatures in South Korea

Jan
3°
8/-2
20mm
Feb
6°
11/1
25mm
Mar
11°
16/6
50mm
Apr
18°
23/13
70mm
May
23°
28/18
100mm
Jun
27°
32/22
130mm
Jul
29°
34/24
350mm
Aug
30°
35/25
290mm
Sep
26°
31/21
170mm
Oct
20°
25/15
50mm
Nov
12°
17/7
50mm
Dec
5°
10/0
25mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Typical monthly temperatures in Mongolia

Jan
-15°
-10/-20
1mm
Feb
-10°
-5/-15
2mm
Mar
-1°
4/-6
3mm
Apr
9°
14/4
6mm
May
17°
22/12
11mm
Jun
22°
27/17
35mm
Jul
23°
28/18
65mm
Aug
21°
26/16
60mm
Sep
14°
19/9
25mm
Oct
5°
10/0
6mm
Nov
-7°
-2/-12
3mm
Dec
-14°
-9/-19
2mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Travel advisories

South Korea: Normal precautions (UK FCDO) ↗Mongolia: Normal precautions (UK FCDO) ↗

Common questions

How far is Seoul from Ulaanbaatar?

Seoul (ICN) and Ulaanbaatar (ULN) are around 1,971 km (1,225 miles) apart — an estimated 2h 58m by air. Distances and flight times are great-circle estimates.

What is the time difference between Seoul and Ulaanbaatar?

Time difference ~ 1 hour (varies with daylight-saving).

When is it warmest in Mongolia?

Across Mongolia, the warmest month on average is July, with mean temperatures around 23°C. These are country-level monthly climate normals, not airport-specific.

Are there travel advisories for South Korea and Mongolia?

The UK FCDO currently rates South Korea as Normal precautions; The UK FCDO rates Mongolia as Normal precautions. Check the official sources before you travel.

Distances and flight times are great-circle estimates, not booked block times.