Cheap flights from Seoul to Ulaanbaatar
from 108 US$
From 233 USD — compare hundreds of airlines
The cheapest month is usually 2026-09 · 108 US$
See prices for my dates →Live fares from 100+ sites — free, with no hidden fees.
About this route
Compare flights from Seoul to Ulaanbaatar, a about 1,999 km route (around 2h 60m nonstop). We gather live prices from hundreds of airlines and agencies so you can find the cheapest and book on the official site, with no hidden fees. Direct flights are available. Airlines such as Korean Air, MIAT Mongolian Airlines operate this route.
When to buy and when to fly
Prices by date
Fares found by date — cheapest days in green.
How to get the best price
Airlines on this route
FAQ
What's the cheapest month to fly Seoul to Ulaanbaatar?
It's usually 2026-09, from 108 USD. Use the price calendar to compare other dates.
How long is the flight from Seoul to Ulaanbaatar?
A nonstop flight takes about 2h 60m and covers around 1,999 km. Connecting itineraries take longer.
Are there direct flights from Seoul to Ulaanbaatar?
Yes, this route has nonstop flights. Filter by "nonstop" to see them.
Which airlines fly from Seoul to Ulaanbaatar?
Korean Air, MIAT Mongolian Airlines operate this route, among others. Compare them all in the results.
When should I book Seoul–Ulaanbaatar flights?
As a rule of thumb, booking 3–8 weeks ahead and avoiding weekends and holidays tends to give the best prices. Use the calendar to spot the cheapest dates.
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Seoul → Ulaanbaatar · Live fares from 100+ sites — free, with no hidden fees.