Cheapest one-way flights from Seoul to Ulaanbaatar in December from 89€

AirHint found the following cheapest one-way flights from Seoul (ICN) to Ulaanbaatar (UBN) in December 2025 (see full year).

One-Way flights

16 Dec Jeju Air direct
23 Dec Jeju Air direct
14 Dec Jeju Air direct
22 Dec Air China
08 Dec Air China
29 Dec Air China
30 Dec Jeju Air direct
28 Dec Jeju Air direct
22 Dec Aero Mongolia direct
08 Dec Asiana Airlines direct

Also check the deals for return flights from Seoul to Ulaanbaatar in December.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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