Cheapest return flights from London to Sydney in September from $688

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

Return flights

08 Sep - 23 Oct China Southern
11 Sep - 21 Oct China Southern
08 Sep - 22 Oct China Southern
20 Sep - 15 Oct China Southern
04 Sep - 22 Oct China Eastern
19 Sep - 14 Oct China Eastern
23 Sep - 15 Oct China Eastern
22 Sep - 14 Oct China Southern
22 Sep - 16 Oct China Southern
04 Sep - 21 Oct China Southern
07 Sep - 14 Sep China Eastern
03 Sep - 10 Sep Vueling Airlines
05 Sep - 13 Sep China Eastern
08 Sep - 14 Sep China Eastern
06 Sep - 16 Sep China Eastern
04 Sep - 09 Sep China Eastern
04 Sep - 16 Sep China Eastern
11 Sep - 16 Sep China Eastern
04 Sep - 18 Sep China Eastern
11 Sep - 18 Sep China Eastern

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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