AirHint found the following cheapest return flights from London (LHR) to Sydney (SYD) in August 2026 (see full year).

Return flights

28 Aug - 14 Sep	China Airlines
11 Aug - 17 Aug	China Airlines
24 Aug - 13 Sep	China Airlines
26 Aug - 10 Sep	SWISS
29 Aug - 07 Sep	China Airlines
17 Aug - 10 Sep	China Airlines
15 Aug - 01 Sep	Malaysia Airlines
20 Aug - 10 Sep	Lufthansa
17 Aug - 31 Aug	China Airlines
13 Aug - 27 Aug	KLM
28 Aug - 31 Aug	China Airlines
24 Aug - 08 Sep	Japan Airlines
13 Aug - 23 Aug	KLM
02 Aug - 09 Aug	Lufthansa
13 Aug - 04 Sep	KLM
19 Aug - 25 Aug	Aer Lingus
17 Aug - 23 Aug	China Airlines
08 Aug - 05 Sep	Japan Airlines
18 Aug - 25 Aug	Singapore Airlines
12 Aug - 19 Aug	Air India

Also check the deals for one-way flights from London to Sydney 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 Sydney in August from 960€

Return flights