Cheapest return flights from Busan to Ulaanbaatar in September from $131

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

Return flights

24 Sep - 29 Sep Jeju Air direct
18 Sep - 26 Sep Jeju Air direct
18 Sep - 29 Sep Jeju Air direct
21 Sep - 28 Sep Jeju Air direct
17 Sep - 22 Sep Jeju Air direct
24 Sep - 28 Sep Jeju Air direct
18 Sep - 22 Sep Jeju Air direct
18 Sep - 05 Oct Jeju Air direct
07 Sep - 05 Oct Jeju Air direct
27 Sep - 05 Oct Jeju Air direct
20 Sep - 29 Sep Jeju Air direct
20 Sep - 22 Sep Jeju Air direct
07 Sep - 19 Sep Jeju Air direct
25 Sep - 24 Oct Jin Air direct
27 Sep - 03 Oct Jeju Air direct
28 Sep - 03 Oct Jeju Air direct
28 Sep - 17 Oct Jin Air direct
25 Sep - 02 Oct Jeju Air direct
21 Sep - 03 Oct Jin Air direct
14 Sep - 03 Oct Jin Air direct

Also check the deals for one-way flights from Busan to Ulaanbaatar in September.

Skyscanner

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.

Book a cheap hotel in Ulaanbaatar

Cheap car rent in Ulaanbaatar

Feel free to contact us with any feedback or request another flight research.