AirHint found the following cheapest return flights from Singapore (SIN) to Ulaanbaatar (UBN) in September 2025 (see full year).
Return flights
| 12 Sep - 23 Sep | Vietnam Airlines | ||
| 07 Sep - 14 Sep | AirAsia | ||
| 15 Sep - 19 Sep | Jeju Air | ||
| 07 Sep - 11 Sep | Jeju Air | ||
| 24 Sep - 30 Sep | Jeju Air | ||
| 03 Sep - 08 Sep | Jeju Air | ||
| 27 Sep - 07 Oct | Jeju Air |
Also check the deals for one-way flights from Singapore 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.
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