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

Return flights

29 Aug - 05 Sep	Shenzhen Airlines
29 Aug - 06 Sep	Shenzhen Airlines
30 Aug - 06 Sep	Shenzhen Airlines
29 Aug - 09 Sep	Shenzhen Airlines
31 Aug - 07 Sep	Shenzhen Airlines
05 Aug - 12 Aug	Air India
05 Aug - 18 Aug	Air India
31 Aug - 14 Sep	Shenzhen Airlines
31 Aug - 11 Sep	Shenzhen Airlines
30 Aug - 14 Sep	Shenzhen Airlines
11 Aug - 18 Aug	Air India
24 Aug - 09 Sep	Aegean Airlines
31 Aug - 16 Sep	Etihad Airways
18 Aug - 25 Aug	Air India
19 Aug - 26 Aug	Air India
12 Aug - 17 Aug	Air India
20 Aug - 24 Aug	Air India
10 Aug - 17 Aug	Air India
16 Aug - 18 Aug	Air India
04 Aug - 17 Aug	Air India

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 $845

Return flights