Cheapest one-way flights from Seoul to Ulaanbaatar in April from 137€

AirHint found the following cheapest one-way flights from Seoul (ICN) to Ulaanbaatar (UBN) in April 2026 (see full year).

One-Way flights

04 Apr Aero Mongolia direct
26 Apr MIAT Mongolian Airlines direct
29 Apr Aero Mongolia direct
23 Apr Korean Air direct
15 Apr Korean Air direct
25 Apr Korean Air direct
01 Apr Korean Air direct
05 Apr Korean Air direct
27 Apr Asiana Airlines direct

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

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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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