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

Return flights

25 Aug - 25 Sep	China Airlines
25 Aug - 13 Sep	China Airlines
12 Aug - 02 Sep	Lufthansa
18 Aug - 30 Aug	China Airlines
26 Aug - 06 Sep	China Airlines
21 Aug - 25 Sep	China Airlines
29 Aug - 11 Sep	China Airlines
28 Aug - 11 Sep	China Airlines
18 Aug - 03 Sep	China Airlines
19 Aug - 04 Sep	China Airlines
19 Aug - 03 Sep	China Airlines
03 Aug - 25 Aug	Turkish Airlines
21 Aug - 30 Aug	China Airlines
02 Aug - 25 Aug	Air Serbia
04 Aug - 25 Aug	Air Serbia
14 Aug - 28 Aug	China Airlines
14 Aug - 30 Aug	China Airlines
12 Aug - 16 Aug	China Airlines
15 Aug - 28 Aug	China Airlines
13 Aug - 31 Aug	Finnair

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.

Book a cheap hotel in Sydney

Cheap car rent in Sydney

Cheapest return flights from London to Sydney in August from $1170

Return flights