Cheapest one-way flights from Seoul to Ulaanbaatar in December from 81€

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
14 Dec Jeju Air direct
07 Dec Jeju Air direct
11 Dec Jeju Air direct
03 Dec Air China
04 Dec Air China
08 Dec Asiana Airlines direct
03 Dec Asiana Airlines direct
04 Dec Jeju Air direct
29 Dec Air China

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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