Cheapest one-way flights from Seoul to Ulaanbaatar in December from 102€

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

One-Way flights

05 Dec Air China
12 Dec Air China
14 Dec Air China
22 Dec Air China
02 Dec Air China
04 Dec Air China
06 Dec Air China
07 Dec Air China
08 Dec Air China
10 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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