Cheapest return flights from Seoul to Ulaanbaatar in August from $253

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

Return flights

30 Aug - 04 Sep T'way Air direct
31 Aug - 04 Sep T'way Air direct
30 Aug - 06 Sep T'way Air direct
31 Aug - 05 Sep Jeju Air direct
23 Aug - 26 Aug T'way Air direct
24 Aug - 31 Aug T'way Air direct
28 Aug - 31 Aug T'way Air direct
24 Aug - 28 Aug T'way Air direct
21 Aug - 31 Aug T'way Air direct
23 Aug - 31 Aug T'way Air direct
21 Aug - 24 Aug T'way Air direct
16 Aug - 26 Aug T'way Air direct
17 Aug - 26 Aug T'way Air direct
29 Aug - 05 Sep Jeju Air direct
30 Aug - 05 Sep Jeju Air direct
17 Aug - 24 Aug T'way Air direct
27 Aug - 01 Sep Jeju Air direct
28 Aug - 03 Sep Korean Air direct
29 Aug - 04 Sep Korean Air direct

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

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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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