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

Return flights

14 Sep - 22 Sep	Jetstar	direct
15 Sep - 22 Sep	Jetstar	direct
07 Sep - 15 Sep	Jetstar	direct
08 Sep - 15 Sep	Jetstar	direct
15 Sep - 19 Sep	Jetstar	direct
08 Sep - 22 Sep	Jetstar	direct
30 Sep - 06 Oct	AirAsia
07 Sep - 21 Sep	Jetstar	direct
07 Sep - 12 Sep	Jetstar	direct
08 Sep - 12 Sep	Jetstar	direct
07 Sep - 10 Sep	Jetstar	direct
30 Sep - 25 Oct	AirAsia
22 Sep - 31 Oct	Scoot
18 Sep - 30 Oct	Scoot
12 Sep - 02 Oct	Scoot
22 Sep - 01 Oct	Scoot
08 Sep - 01 Oct	Jetstar
23 Sep - 02 Oct	AirAsia
15 Sep - 05 Oct	Jetstar
25 Sep - 01 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 203€

Return flights