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

Return flights

11 Sep - 25 Sep	China Airlines
11 Sep - 23 Sep	Scoot
02 Sep - 30 Sep	Scoot
21 Sep - 28 Sep	Vietnam Airlines
14 Sep - 21 Sep	Vietnam Airlines
16 Sep - 23 Sep	Vietnam Airlines
04 Sep - 25 Sep	China Airlines
07 Sep - 14 Sep	China Airlines
10 Sep - 28 Sep	China Airlines
04 Sep - 18 Sep	China Airlines
18 Sep - 14 Oct	China Airlines
18 Sep - 23 Oct	China Airlines
24 Sep - 22 Oct	Turkish Airlines
20 Sep - 07 Oct	Turkish Airlines
22 Sep - 28 Oct	Turkish Airlines
25 Sep - 21 Oct	Turkish Airlines
24 Sep - 17 Oct	Turkish Airlines
23 Sep - 14 Oct	Turkish Airlines
24 Sep - 06 Oct	Turkish Airlines
17 Sep - 16 Oct	China Airlines

Also check the deals for one-way flights from Sydney to London 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 Sydney to London in September from $1155

Return flights