Cheapest return ICN–UBN flights, December

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

Return flights

12 Dec - 15 Dec Asiana Airlines direct
30 Dec - 03 Jan Asiana Airlines direct
28 Dec - 03 Jan Asiana Airlines direct
26 Dec - 28 Dec Korean Air direct
24 Dec - 28 Dec Korean Air direct
12 Dec - 16 Dec Korean Air direct
25 Dec - 27 Dec Korean Air direct
25 Dec - 02 Jan Korean Air direct
28 Dec - 01 Jan Korean Air direct
31 Dec - 03 Jan Korean Air direct
26 Dec - 02 Jan Korean Air direct
07 Dec - 11 Dec Korean Air direct
09 Dec - 18 Dec Korean Air direct
10 Dec - 18 Dec Korean Air direct
19 Dec - 23 Dec Korean Air direct
24 Dec - 01 Jan Korean Air direct
25 Dec - 01 Jan Korean Air direct

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

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