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

Return flights

08 Sep - 22 Sep	Ryanair
14 Sep - 19 Oct	easyJet
30 Sep - 13 Oct	Wizz Air
18 Sep - 13 Oct	Wizz Air UK
06 Sep - 13 Sep	Ryanair
19 Sep - 23 Sep	easyJet
24 Sep - 14 Oct	easyJet
09 Sep - 12 Sep	Ryanair
29 Sep - 14 Oct	Ryanair
14 Sep - 16 Oct	easyJet
07 Sep - 17 Sep	Ryanair
22 Sep - 09 Oct	easyJet
25 Sep - 13 Oct	Wizz Air
08 Sep - 23 Sep	Ryanair
08 Sep - 11 Sep	Ryanair
15 Sep - 16 Sep	easyJet
26 Sep - 31 Oct	Ryanair
11 Sep - 16 Sep	Wizz Air UK
08 Sep - 18 Sep	easyJet
27 Sep - 02 Oct	easyJet

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 $939

Return flights