AirHint found the following cheapest one-way flights from Ulaanbaatar (UBN) to Seoul (ICN) in April 2026 (see full year).
One-Way flights
| 16 Apr | Korean Air | direct | |
| 01 Apr | Korean Air | direct | |
| 04 Apr | Korean Air | direct | |
| 14 Apr | MIAT Mongolian Airlines | direct | |
| 26 Apr | Korean Air | direct | |
| 28 Apr | Asiana Airlines | direct |
Also check the deals for return flights from Ulaanbaatar to Seoul 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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