Cheapest return flights from Ulaanbaatar to Seoul in January from $274

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

Return flights

15 Jan - 22 Jan Jeju Air direct
24 Jan - 04 Feb Aero Mongolia direct
24 Jan - 01 Feb MIAT Mongolian Airlines direct
29 Jan - 26 Feb Jeju Air direct
15 Jan - 25 Jan Jeju Air direct
11 Jan - 13 Jan Jeju Air direct
05 Jan - 22 Jan Aero Mongolia direct
18 Jan - 08 Feb Korean Air direct
17 Jan - 08 Feb Korean Air direct
26 Jan - 20 Feb Korean Air direct
26 Jan - 23 Feb Korean Air direct
08 Jan - 25 Jan Jeju Air direct
03 Jan - 17 Jan Aero Mongolia direct
02 Jan - 05 Feb Korean Air direct
03 Jan - 05 Feb Korean Air direct
05 Jan - 05 Feb Korean Air direct
10 Jan - 25 Jan Korean Air direct
07 Jan - 25 Jan Korean Air direct
14 Jan - 24 Jan Korean Air direct
11 Jan - 17 Jan Korean Air direct

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

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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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