Cheapest return flights from Seoul to Ulaanbaatar in October from $229

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

Return flights

20 Oct - 22 Oct Jeju Air direct
01 Oct - 07 Oct Korean Air direct
01 Oct - 09 Oct Korean Air direct
01 Oct - 05 Oct Korean Air direct
18 Oct - 21 Oct Korean Air direct
31 Oct - 06 Nov Korean Air direct
31 Oct - 04 Nov Korean Air direct
05 Oct - 12 Oct Korean Air direct
08 Oct - 11 Oct Korean Air direct
02 Oct - 10 Oct Korean Air direct
03 Oct - 10 Oct Korean Air direct
19 Oct - 25 Oct 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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