Cheapest return flights from Seoul to Ulaanbaatar in September from 215€

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

Return flights

04 Sep - 06 Sep T'way Air direct
02 Sep - 06 Sep T'way Air direct
07 Sep - 10 Sep Jeju Air direct
13 Sep - 19 Sep Jeju Air direct
07 Sep - 12 Sep Jeju Air direct
01 Sep - 07 Sep Jeju Air direct
12 Sep - 17 Sep Jeju Air direct
17 Sep - 22 Sep Jeju Air direct
02 Sep - 11 Sep MIAT Mongolian Airlines direct
05 Sep - 08 Sep Jeju Air direct
25 Sep - 05 Oct Korean Air direct

Also check the deals for one-way 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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