AirHint found the following cheapest one-way flights from Seoul (ICN) to Ulaanbaatar (UBN) in May 2026 (see full year).
One-Way flights
| 02 May | Asiana Airlines | direct | |
| 04 May | Asiana Airlines | direct | |
| 03 May | MIAT Mongolian Airlines | direct | |
| 01 May | MIAT Mongolian Airlines | direct | |
| 22 May | Korean Air | direct |
Also check the deals for return flights from Seoul to Ulaanbaatar in May.
Powered by
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.
Find us on social media