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

Return flights

05 Sep - 20 Sep	Scoot
10 Sep - 20 Sep	AirAsia
02 Sep - 13 Sep	Jetstar
09 Sep - 15 Sep	Jetstar
03 Sep - 07 Sep	AirAsia
03 Sep - 06 Sep	AirAsia
04 Sep - 10 Sep	AirAsia
05 Sep - 12 Sep	Scoot
04 Sep - 19 Sep	AirAsia
04 Sep - 08 Sep	AirAsia
11 Sep - 23 Oct	AirAsia
29 Sep - 13 Oct	AirAsia
24 Sep - 01 Oct	AirAsia
13 Sep - 26 Oct	Batik Air Malaysia
16 Sep - 14 Oct	Jetstar
21 Sep - 18 Oct	Jetstar
22 Sep - 13 Oct	Qantas
25 Sep - 24 Oct	AirAsia
09 Sep - 06 Oct	Jetstar
09 Sep - 07 Oct	Jetstar

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 $906

Return flights