AirHint found the following cheapest return flights from Perth (PER) to Ulaanbaatar (UBN) in September 2026 (see full year).
Return flights
| 12 Sep - 22 Sep | AirAsia | ||
| 02 Sep - 23 Sep | AirAsia | ||
| 09 Sep - 30 Sep | Batik Air Malaysia | ||
| 03 Sep - 21 Sep | Condor | ||
| 02 Sep - 21 Sep | Condor |
Also check the deals for one-way flights from Perth to Ulaanbaatar in September.
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