Cheapest return flights from Ulaanbaatar to Seoul in December from 237€

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

Return flights

11 Dec - 18 Dec Jeju Air direct
11 Dec - 16 Dec Jeju Air direct
02 Dec - 09 Dec Jeju Air direct
16 Dec - 23 Dec Jeju Air direct
07 Dec - 16 Dec Jeju Air direct
18 Dec - 18 Jan Jeju Air direct
11 Dec - 15 Dec Korean Air direct
01 Dec - 03 Dec Korean Air direct
18 Dec - 15 Jan Jeju Air direct
14 Dec - 07 Jan Korean Air direct
27 Dec - 10 Jan Korean Air direct
26 Dec - 10 Jan Korean Air direct
19 Dec - 09 Jan Korean Air direct

Also check the deals for one-way flights from Ulaanbaatar to Seoul 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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