AirportMiles

Seoul (ICN) – Ulaanbaatar (UBN)

Flights on GoogleSkyscanner
Distance, flight time and the airlines that fly it, from open data.
Distance
1,960 km
1,218 mi · 1,058 nm
Flight time
3 h 5 min
Estimate from distance
Time difference
1 h
CO2 per passenger
246 kg
One way, economy, incl. RF (146 kg CO2 only)
Passengers, 6 months
238,551
Jan 2026 – Jun 2026
Flights / week
61
Both directions, average
Seats filled
—
Airlines nonstop
6
OM, KE, 7C

Traffic: Incheon International Airport Corporation (Korea), scheduled passenger flights, Jan 2026 – Jun 2026. Distance: WGS-84 ellipsoid. CO2: UK DESNZ 2026 factors. Sources

Great circle from ICN to UBNICNUBN
Shortest path over the earth's surface (great circle). Real flights bend around weather, winds and airspace.

The way there

Heading from ICN
311°
Heading from UBN
118°
Halfway point
42.98, 117.44
Great-circle km
1,957 km (sphere, for EU261)
Clocks
Ulaanbaatar is 1 h behind Seoul

The estimate for a route without real times is 3 h 5 min; how it is worked out is on Sources.

Passengers per month, both directions (Jan 2026 – Jun 2026)Busiest: June 2026: 69,859 passengers
050K100KJanFebMarAprMayJun69.9K
Show as a table
Month Passengers
Jan 202634,370
Feb 202633,985
Mar 202633,120
Apr 202632,167
May 202635,050
Jun 202669,859
Flights per month, both directions (Jan 2026 – Jun 2026)Busiest: June 2026: 403 flights
0200400600JanFebMarAprMayJun403
Show as a table
Month Flights
Jan 2026272
Feb 2026217
Mar 2026230
Apr 2026223
May 2026229
Jun 2026403

Airlines flying ICN–UBN nonstop

Airline Flights / week Share of passengers
OMMIAT Mongolian Airlines26
46%
KEKorean Air Lines13
21%
7CJeju Air6.7
12%
OZAsiana Airlines6.6
9%
M0Aero Mongolia7.5
9%
TWTrinity Airways1.3
3%

Both directions, Jan 2026 – Jun 2026. Airlines with at least one flight a month. Incheon International Airport Corporation (Korea), scheduled passenger flights. Sources

Delay compensation (EU261 / UK261)

Measured by great-circle distance: 1,957 km.

Neither EU261 nor UK261 covers this route: it neither starts nor ends in the EU, EEA, Switzerland or the UK. Other countries have their own rules (for example Canada's APPR or Brazil's ANAC rules).

Also owed for a cancellation with less than 14 days' notice or denied boarding. Not owed for extraordinary circumstances. On a connection, the distance to the final destination counts. From 23 October 2027 the EU's Regulation 2026/2202 applies; it keeps these amounts (what changes in 2027). Information, not legal advice.

Every airport pair between Seoul and Ulaanbaatar

UBN
ICN1,960
GMP1,976

Kilometres. Linked numbers have a page of their own. All Seoul airports

More routes from ICN

Route Distance Passengers
ICN → NRT1,260 km 2,519,026 (6 mo)
ICN → KIX862 km 2,313,960 (6 mo)
ICN → FUK563 km 1,708,245 (6 mo)
ICN → HKG2,067 km 1,316,010 (6 mo)
ICN → TPE1,460 km 1,184,972 (6 mo)
ICN → PVG821 km 1,111,272 (6 mo)
ICN → BKK3,665 km 950,069 (6 mo)
ICN → DAD2,976 km 941,076 (6 mo)
ICN → SIN4,614 km 900,158 (6 mo)
ICN → TAO580 km 797,360 (6 mo)

More routes from UBN

Route Distance Passengers / year
UBN → IST5,987 km 145,034
UBN → FRA6,661 km 85,141

Questions

Seoul (ICN) and Ulaanbaatar (UBN) are 1,960 km (1,218 miles, 1,058 nautical miles) apart, measured along the shortest path over the earth's surface.