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

Return flights

31 Jul - 07 Aug	KLM
30 Jul - 12 Aug	Air India
30 Jul - 11 Aug	Air India
28 Jul - 10 Aug	KLM
28 Jul - 04 Aug	KLM
30 Jul - 09 Aug	KLM
28 Jul - 15 Aug	KLM
27 Jul - 10 Aug	Air India
27 Jul - 11 Aug	Air India
28 Jul - 12 Aug	Air India
10 Jul - 24 Jul	Air India
23 Jul - 30 Jul	Air India
09 Jul - 12 Jul	Air India
08 Jul - 15 Jul	Air India
22 Jul - 27 Jul	Aegean Airlines
22 Jul - 29 Jul	Air India
13 Jul - 20 Jul	Air India
09 Jul - 20 Jul	Air India
10 Jul - 17 Jul	Air India
10 Jul - 12 Jul	Air India

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

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 July from 963€

Return flights