Cheapest return flights from Seoul to Ulaanbaatar in August from $246

Best time to book flights for Seoul (ICN) to Ulaanbaatar (UBN) flights at AirHint

AirHint found the following cheapest return flights from Seoul (ICN) to Ulaanbaatar (UBN) in August 2025 (see full year).

Return flights

24 Aug - 28 Aug Jeju Air direct
24 Aug - 30 Aug Jeju Air direct
25 Aug - 30 Aug Jeju Air direct
25 Aug - 28 Aug Jeju Air direct
25 Aug - 01 Sep Jeju Air direct
26 Aug - 30 Aug Jeju Air direct
24 Aug - 07 Sep Jeju Air direct
19 Aug - 28 Aug Jeju Air direct
17 Aug - 28 Aug Jeju Air direct
19 Aug - 26 Aug Jeju Air direct
30 Aug - 07 Sep Jeju Air direct
30 Aug - 06 Sep Jeju Air direct
28 Aug - 01 Sep Jeju Air direct
25 Aug - 31 Aug Jeju Air direct
26 Aug - 31 Aug Jeju Air direct
27 Aug - 03 Sep Korean Air direct
31 Aug - 05 Sep Korean Air direct

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

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