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

Return flights

23 Sep - 21 Oct	Wizz Air UK
23 Sep - 28 Oct	Ryanair
23 Sep - 30 Oct	Wizz Air UK
25 Sep - 28 Oct	Ryanair
22 Sep - 05 Oct	Wizz Air UK
22 Sep - 02 Oct	Wizz Air UK
23 Sep - 14 Oct	Ryanair
29 Sep - 13 Oct	Wizz Air UK
24 Sep - 08 Oct	Wizz Air UK
22 Sep - 04 Oct	Wizz Air UK
23 Sep - 30 Sep	Wizz Air UK
19 Sep - 21 Sep	Wizz Air UK
24 Sep - 30 Sep	Wizz Air UK
23 Sep - 29 Sep	Wizz Air UK
18 Sep - 21 Sep	China Eastern
20 Sep - 29 Sep	Wizz Air UK
27 Sep - 30 Sep	Wizz Air UK
24 Sep - 29 Sep	Wizz Air UK
17 Sep - 22 Sep	Shenzhen Airlines
17 Sep - 21 Sep	Shenzhen Airlines

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.

Book a cheap hotel in Perth

Cheap car rent in Perth

Cheapest return flights from London to Perth in September from $766

Return flights