AirHint found the following cheapest return flights from Perth (PER) to Vientiane (VTE) in September 2025 (see full year).

Return flights

24 Sep - 04 Oct	Scoot
22 Sep - 27 Sep	AirAsia
17 Sep - 20 Sep	AirAsia
17 Sep - 27 Sep	AirAsia
22 Sep - 04 Oct	AirAsia
19 Sep - 27 Sep	AirAsia
24 Sep - 27 Sep	AirAsia
24 Sep - 05 Oct	Scoot
17 Sep - 04 Oct	AirAsia
19 Sep - 04 Oct	AirAsia
20 Sep - 27 Sep	Thai Airways
17 Sep - 28 Sep	Scoot

Also check the deals for one-way flights from Perth to Vientiane 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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Cheapest return flights from Perth to Vientiane in September from $489

Return flights