Cheapest return flights from London to Sydney in September from 575€

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

Return flights

08 Sep - 22 Oct China Southern
09 Sep - 20 Oct China Southern
21 Sep - 22 Oct China Southern
16 Sep - 23 Oct China Southern
15 Sep - 23 Oct China Southern
21 Sep - 20 Oct China Southern
21 Sep - 21 Oct China Southern
21 Sep - 26 Oct China Southern
16 Sep - 21 Oct China Southern
21 Sep - 25 Oct China Southern
01 Sep - 08 Sep China Southern
01 Sep - 10 Sep China Southern
03 Sep - 10 Sep China Southern
01 Sep - 11 Sep China Southern
04 Sep - 11 Sep China Southern
03 Sep - 11 Sep China Southern
02 Sep - 11 Sep China Southern
02 Sep - 09 Sep China Southern
04 Sep - 10 Sep China Southern
01 Sep - 07 Sep China Southern

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.

Book a cheap hotel in Sydney

Cheap car rent in Sydney

Feel free to contact us with any feedback or request another flight research.