Cheapest return flights from Osaka to Ulaanbaatar in September from $380

AirHint found the following cheapest return flights from Osaka (KIX) to Ulaanbaatar (UBN) in September 2025 (see full year).

Return flights

20 Sep - 24 Sep T'way Air
13 Sep - 17 Sep T'way Air
16 Sep - 19 Sep T'way Air
09 Sep - 15 Sep T'way Air
06 Sep - 10 Sep T'way Air
19 Sep - 23 Sep Asiana Airlines
12 Sep - 17 Sep Asiana Airlines
05 Sep - 09 Sep Asiana Airlines
02 Sep - 09 Sep Asiana Airlines
13 Sep - 16 Sep Air China
30 Sep - 05 Oct Korean Air

Also check the deals for one-way flights from Osaka 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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