AirHint found the following cheapest one-way flights from Ulaanbaatar (UBN) to Bangkok (BKK) in September 2025 (see full year).
One-Way flights
| 26 Sep | Jeju Air | ||
| 09 Sep | Jin Air | ||
| 25 Sep | Jeju Air | ||
| 24 Sep | T'way Air | ||
| 21 Sep | Jeju Air | ||
| 02 Sep | Jin Air | ||
| 15 Sep | T'way Air | ||
| 29 Sep | T'way Air | ||
| 11 Sep | Jeju Air | ||
| 10 Sep | T'way Air |
Also check the deals for return flights from Ulaanbaatar to Bangkok 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.
Find us on social media