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

Return flights

24 Sep - 11 Oct	Batik Air Malaysia
22 Sep - 06 Oct	Batik Air Malaysia
20 Sep - 11 Oct	Scoot
27 Sep - 28 Sep	Batik Air Malaysia
17 Sep - 15 Oct	Jetstar	direct
21 Sep - 07 Oct	Jetstar
22 Sep - 12 Oct	Thai AirAsia
22 Sep - 10 Oct	Thai AirAsia
24 Sep - 12 Oct	AirAsia
24 Sep - 10 Oct	AirAsia
24 Sep - 13 Oct	AirAsia
24 Sep - 30 Sep	Jetstar
18 Sep - 20 Sep	Scoot
22 Sep - 23 Sep	Thai AirAsia
22 Sep - 30 Sep	Thai AirAsia
19 Sep - 22 Sep	Jetstar
20 Sep - 25 Sep	Scoot
21 Sep - 25 Sep	Jetstar
23 Sep - 30 Sep	Thai AirAsia
19 Sep - 26 Sep	Thai AirAsia

Also check the deals for one-way flights from Bangkok to Perth 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 Bangkok to Perth in September from 217€

Return flights