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

Return flights

15 Sep - 22 Sep	Jetstar	direct
07 Sep - 21 Sep	Jetstar	direct
07 Sep - 12 Sep	Jetstar	direct
08 Sep - 15 Sep	Jetstar	direct
07 Sep - 14 Sep	Jetstar	direct
07 Sep - 15 Sep	Jetstar	direct
07 Sep - 22 Sep	Jetstar	direct
07 Sep - 27 Oct	Jetstar	direct
08 Sep - 19 Sep	Jetstar	direct
08 Sep - 21 Sep	Jetstar	direct
08 Sep - 14 Sep	Jetstar	direct
15 Sep - 15 Oct	Jetstar
30 Sep - 29 Oct	AirAsia
16 Sep - 30 Oct	Scoot
10 Sep - 22 Oct	Scoot
23 Sep - 01 Oct	Scoot
22 Sep - 20 Oct	Scoot
22 Sep - 01 Oct	Scoot
18 Sep - 01 Oct	Scoot
22 Sep - 19 Oct	Scoot

Also check the deals for one-way flights from Perth 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.

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Cheapest return flights from Perth to Bangkok in September from $237

Return flights