Cheapest return flights from London to Sydney in September from $690

AirHint found the following cheapest return flights from London (LON) to Sydney (SYD) in September 2025 (see full year).

Return flights

08 Sep - 20 Oct China Southern
08 Sep - 22 Oct China Southern
20 Sep - 14 Oct China Eastern
15 Sep - 15 Oct China Southern
13 Sep - 14 Oct China Southern
14 Sep - 22 Oct China Southern
15 Sep - 23 Oct China Southern
17 Sep - 28 Oct China Southern
09 Sep - 16 Oct China Southern
20 Sep - 15 Oct China Southern
03 Sep - 10 Sep Vueling Airlines
06 Sep - 10 Sep Wizz Air Malta
04 Sep - 09 Sep China Eastern
02 Sep - 18 Sep Air China
01 Sep - 15 Sep Wizz Air UK
01 Sep - 09 Sep Shenzhen Airlines
03 Sep - 08 Sep Vueling Airlines
01 Sep - 06 Sep Shenzhen Airlines
04 Sep - 08 Sep Wizz Air Malta
04 Sep - 16 Sep Wizz Air Malta

Also check the deals for one-way flights from London to Sydney in September.

Skyscanner

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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