Cheapest return flights from Seoul to Ulaanbaatar in December from 319€

AirHint found the following cheapest return flights from Seoul (ICN) to Ulaanbaatar (UBN) in December 2026 (see full year).

Return flights

23 Dec - 27 Dec Asiana Airlines direct
12 Dec - 15 Dec Asiana Airlines direct
05 Dec - 13 Dec Asiana Airlines direct
23 Dec - 28 Dec Korean Air direct
24 Dec - 28 Dec Korean Air direct
12 Dec - 16 Dec Korean Air direct
26 Dec - 30 Dec Korean Air direct
27 Dec - 30 Dec Korean Air direct

Also check the deals for one-way 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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