Cheapest one-way flights from Seoul to Ulaanbaatar in August from $128

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

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

One-Way flights

31 Aug T'way Air direct
29 Aug T'way Air direct
27 Aug T'way Air direct
24 Aug Jeju Air direct
25 Aug Jeju Air direct
28 Aug Jeju Air direct
30 Aug Jeju Air direct
10 Aug Jeju Air direct
17 Aug T'way Air direct
18 Aug T'way Air direct

Also check the deals for return 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.

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