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

Return flights

15 Sep - 21 Sep	Scoot
07 Sep - 22 Sep	Scoot
17 Sep - 21 Sep	Scoot
01 Sep - 10 Sep	Jetstar	direct
15 Sep - 29 Oct	Jetstar	direct
07 Sep - 22 Sep	Jetstar	direct
07 Sep - 10 Sep	Jetstar	direct
08 Sep - 14 Sep	Jetstar	direct
08 Sep - 19 Sep	Jetstar	direct
01 Sep - 29 Oct	Jetstar	direct
03 Sep - 07 Sep	Jetstar	direct
14 Sep - 28 Sep	Jetstar	direct
09 Sep - 28 Oct	AirAsia
15 Sep - 28 Oct	Scoot
19 Sep - 15 Oct	Jetstar	direct
01 Sep - 01 Oct	AirAsia
15 Sep - 05 Oct	Jetstar
18 Sep - 01 Oct	Scoot
01 Sep - 01 Oct	Jetstar	direct
15 Sep - 05 Oct	Jetstar	direct

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 185€

Return flights