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

Return flights

17 Sep - 21 Oct	Air China
16 Sep - 28 Oct	Wizz Air UK
23 Sep - 21 Oct	Wizz Air Malta
22 Sep - 28 Oct	Air China
15 Sep - 13 Oct	Wizz Air UK
24 Sep - 21 Oct	Vueling Airlines
22 Sep - 13 Oct	Air China
22 Sep - 20 Oct	Wizz Air UK
17 Sep - 18 Oct	Air China
14 Sep - 02 Oct	China Eastern
16 Sep - 23 Sep	Wizz Air UK
16 Sep - 30 Sep	Wizz Air UK
15 Sep - 22 Sep	Wizz Air UK
10 Sep - 18 Sep	Turkish Airlines
23 Sep - 30 Sep	Wizz Air Malta
20 Sep - 30 Sep	Wizz Air UK
16 Sep - 29 Sep	Wizz Air UK
15 Sep - 23 Sep	Turkish Airlines
12 Sep - 16 Sep	Wizz Air UK
18 Sep - 22 Sep	Air China

Also check the deals for one-way flights from London to Perth 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 London to Perth in September from 648€

Return flights