Direct (nonstop) flights from Seoul to Ulaanbaatar
7 airlines fly nonstop from Incheon International Airport (ICN) to Chinggis Khan International Airport (UBN). It's 1,218 miles (1,960 km), about 3h 40m in the air. Operated by Jeju Air, Korean Air, Aero Mongolia and others.
Jeju Air
Korean Air
Aero Mongolia
Miat - Mongolian Airlines
Asiana Airlines
T´Way Air
+1 more
Route data last updated: May 25, 2026
Airlines with non-stop flights
OM
Miat - Mongolian Airlines
OZ
Asiana Airlines
XF
Vladivostok Air
Alternative Routes
Other ways to fly from Seoul to Ulaanbaatar with one stop · direct emits 206 kg CO₂ per passenger
Looking for the return flight?
UBN → ICN: Flights from Ulaanbaatar to SeoulOther direct flights from Seoul
Direct flights from Ulaanbaatar (UBN)
Frequently Asked Questions
How long is the direct flight from Seoul to Ulaanbaatar?
A nonstop flight from Seoul (ICN) to Ulaanbaatar (UBN) takes approximately 3 hours and 40 minutes. The distance is 1,218 miles (1,960 km).
Which airlines fly nonstop from Seoul to Ulaanbaatar?
7 airlines: Jeju Air, Korean Air, Aero Mongolia, Miat - Mongolian Airlines, Asiana Airlines, T´Way Air, Vladivostok Air.
Is there a nonstop flight from Seoul to Ulaanbaatar?
Yes. 7 airlines: Jeju Air, Korean Air, Aero Mongolia, Miat - Mongolian Airlines, Asiana Airlines, T´Way Air, Vladivostok Air.
How far is Seoul from Ulaanbaatar?
The flight distance from Seoul to Ulaanbaatar is 1,218 miles (1,960 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Miami.
What is the time difference between Seoul and Ulaanbaatar?
Ulaanbaatar is 1 hour behind Seoul. (Asia/Seoul vs Asia/Ulaanbaatar.)
What type of aircraft flies from Seoul to Ulaanbaatar?
At 3h 40m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
Do I need a visa to travel from Republic of Korea to Mongolia?
Depends on your passport. Check with the Mongolia embassy or an official visa portal before booking — requirements change.
What is the carbon footprint of a flight from Seoul to Ulaanbaatar?
Roughly 206 kg CO2 per passenger one-way. That's about the same as driving 1,030 km.
Is the return flight from Ulaanbaatar to Seoul also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Seoul to Ulaanbaatar?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Incheon International Airport for this flight?
3 hours before departure for international flights. You need time for check-in, security, and immigration.