Cheapest one-way flights from Seoul to Ulaanbaatar in May from $170
AirHint found the following cheapest one-way flights from Seoul (ICN) to Ulaanbaatar (UBN) in May 2025 (see full year).
One-Way flights
| 20 May | MIAT Mongolian Airlines | direct | |
| 03 May | Korean Air | direct | |
| 01 May | Korean Air | direct | |
| 13 May | MIAT Mongolian Airlines | direct |
Also check the deals for return flights from Seoul to Ulaanbaatar in May.
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.
