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

Return flights

17 Sep - 30 Sep	Turkish Airlines
23 Sep - 30 Sep	Turkish Airlines
18 Sep - 27 Sep	Turkish Airlines
18 Sep - 25 Sep	Turkish Airlines
03 Sep - 14 Sep	Scoot
18 Sep - 02 Oct	Scoot
18 Sep - 07 Oct	Scoot
13 Sep - 25 Sep	Turkish Airlines
29 Sep - 15 Oct	Scoot
07 Sep - 02 Oct	Scoot
18 Sep - 10 Oct	Scoot
18 Sep - 16 Oct	Scoot
24 Sep - 22 Oct	Scoot
16 Sep - 20 Oct	Scoot
15 Sep - 27 Oct	AirAsia X
03 Sep - 19 Sep	Scoot
13 Sep - 04 Oct	Turkish Airlines
07 Sep - 14 Sep	Scoot
06 Sep - 22 Sep	Scoot
15 Sep - 29 Sep	Scoot

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 $1028

Return flights