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

Return flights

28 Aug - 14 Sep	ITA Airways
27 Aug - 17 Sep	SWISS
20 Aug - 14 Sep	SWISS
26 Aug - 03 Sep	British Airways
28 Aug - 10 Sep	British Airways
27 Aug - 08 Sep	British Airways
27 Aug - 03 Sep	British Airways
18 Aug - 08 Sep	British Airways
27 Aug - 07 Sep	British Airways
27 Aug - 02 Sep	Lufthansa
20 Aug - 27 Aug	British Airways
24 Aug - 31 Aug	KLM
28 Aug - 31 Aug	ITA Airways
19 Aug - 24 Aug	ITA Airways
21 Aug - 28 Aug	KLM
29 Aug - 31 Aug	SWISS
18 Aug - 25 Aug	KLM
16 Aug - 23 Aug	KLM
19 Aug - 28 Aug	British Airways
24 Aug - 28 Aug	SWISS

Also check the deals for one-way flights from London to Perth in August.

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 August from 919€

Return flights