Cheapest one-way flights from Seoul to Ulaanbaatar in September from $106

AirHint found the following cheapest one-way flights from Seoul (ICN) to Ulaanbaatar (UBN) in September 2026 (see full year).

One-Way flights

30 Sep T'way Air direct
09 Sep T'way Air direct
04 Sep T'way Air direct
02 Sep T'way Air direct
03 Sep MIAT Mongolian Airlines direct
20 Sep Jeju Air direct
22 Sep Jeju Air direct
29 Sep Jeju Air direct
28 Sep Jeju Air direct
17 Sep MIAT Mongolian Airlines direct

Also check the deals for return flights from Seoul to Ulaanbaatar in September.

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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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