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

Return flights

16 Sep - 28 Oct	AirAsia
30 Sep - 28 Oct	AirAsia
03 Sep - 18 Sep	AirAsia
08 Sep - 23 Sep	Scoot Tigerair
07 Sep - 17 Sep	Scoot Tigerair
15 Sep - 29 Sep	Batik Air Malaysia
15 Sep - 27 Oct	AirAsia
10 Sep - 24 Sep	Scoot Tigerair
14 Sep - 17 Sep	Batik Air Malaysia
10 Sep - 17 Sep	Scoot Tigerair
06 Sep - 11 Sep	Scoot Tigerair
07 Sep - 21 Sep	Scoot Tigerair
15 Sep - 07 Oct	AirAsia
13 Sep - 24 Sep	Jetstar
22 Sep - 03 Oct	Scoot Tigerair
22 Sep - 06 Oct	Malaysia Airlines
25 Sep - 05 Oct	Malaysia Airlines
29 Sep - 07 Oct	AirAsia
14 Sep - 30 Oct	Qantas
28 Sep - 14 Oct	Malaysia Airlines

Also check the deals for one-way flights from Perth to London 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 London in September from 705€

Return flights