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

Return flights

03 Sep - 08 Sep	SKY express
03 Sep - 10 Sep	SKY express
03 Sep - 29 Sep	Singapore Airlines
08 Sep - 26 Sep	Singapore Airlines
03 Sep - 11 Sep	SKY express
01 Sep - 07 Sep	SWISS
03 Sep - 24 Sep	Turkish Airlines
08 Sep - 05 Oct	Qatar Airways
01 Sep - 29 Sep	Singapore Airlines
01 Sep - 30 Sep	Singapore Airlines
01 Sep - 28 Sep	Singapore Airlines
02 Sep - 01 Oct	Singapore Airlines
17 Sep - 08 Oct	SKY express
26 Sep - 01 Oct	Turkish Airlines
27 Sep - 01 Oct	SKY express
10 Sep - 01 Oct	Singapore Airlines
21 Sep - 05 Oct	Qatar Airways
06 Sep - 07 Oct	Qatar Airways
19 Sep - 03 Oct	easyJet
19 Sep - 09 Oct	Qatar Airways

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

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 September from $1122

Return flights