Cheapest return PUS–UBN flights, September

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

Return flights

05 Sep - 10 Sep Jeju Air direct
20 Sep - 24 Sep Jeju Air direct
09 Sep - 13 Sep Jeju Air direct
04 Sep - 08 Sep Jin Air direct
21 Sep - 26 Sep Jin Air direct
16 Sep - 20 Sep Jeju Air direct
10 Sep - 13 Sep Jeju Air direct
03 Sep - 06 Sep Jeju Air direct
15 Sep - 19 Sep Air China
04 Sep - 07 Sep Air China

Also check the deals for one-way flights from Busan 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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