Cheapest return flights from Seoul to Ulaanbaatar in October from 187€

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

Return flights

28 Oct - 30 Oct Jeju Air direct
12 Oct - 16 Oct Jeju Air direct
23 Oct - 30 Oct Jeju Air direct
19 Oct - 23 Oct Jeju Air direct
23 Oct - 28 Oct Jeju Air direct
16 Oct - 21 Oct Jeju Air direct
19 Oct - 26 Oct Jeju Air direct
13 Oct - 20 Oct Aero Mongolia direct
11 Oct - 18 Oct MIAT Mongolian Airlines direct
09 Oct - 16 Oct Jeju Air direct
29 Oct - 02 Nov Asiana Airlines direct
29 Oct - 05 Nov Korean Air direct
31 Oct - 03 Nov Korean Air direct
25 Oct - 01 Nov Korean Air direct
27 Oct - 01 Nov Korean Air direct
31 Oct - 09 Nov Korean Air direct

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

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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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