Cheapest one-way flights from Seoul to Ulaanbaatar in May from $184

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 May 2025 (see full year).

One-Way flights

25 May Air China
20 May Air China
20 May Jeju Air direct
15 May Jeju Air direct
23 May Air China
29 May Jeju Air direct
18 May Jeju Air direct
16 May Korean Air direct
25 May Jeju Air direct
23 May MIAT Mongolian Airlines direct

Also check the deals for return flights from Seoul to Ulaanbaatar in May.

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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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