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

Return flights

31 Aug - 20 Sep	China Airlines
24 Aug - 21 Sep	China Airlines
17 Aug - 14 Sep	China Airlines
25 Aug - 08 Sep	Aegean Airlines
21 Aug - 21 Sep	Malaysia Airlines
19 Aug - 21 Sep	Malaysia Airlines
26 Aug - 16 Sep	Etihad Airways
24 Aug - 04 Sep	China Airlines
26 Aug - 03 Sep	China Airlines
31 Aug - 06 Sep	China Airlines
12 Aug - 21 Aug	Malaysia Airlines
17 Aug - 28 Aug	China Airlines
28 Aug - 31 Aug	China Airlines
07 Aug - 28 Aug	Malaysia Airlines
27 Aug - 31 Aug	Austrian Airlines
14 Aug - 30 Aug	China Airlines
12 Aug - 30 Aug	China Airlines
11 Aug - 30 Aug	China Airlines
15 Aug - 27 Aug	China Airlines
14 Aug - 28 Aug	China Airlines

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 949€

Return flights