Cheapest return flights from Busan to Ulaanbaatar in September from $237
AirHint found the following cheapest return flights from Busan (PUS) to Ulaanbaatar (UBN) in September 2025 (see full year).
Return flights
| 21 Sep - 28 Sep | MIAT Mongolian Airlines | direct |
Also check the deals for one-way flights from Busan to Ulaanbaatar in September.
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.
