Cheapest return flights from London to Sydney in September from 812€

Best time to book flights for London (LON) to Sydney (SYD) flights at AirHint

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

Return flights

19 Sep - 19 Oct Air China
09 Sep - 21 Oct Air China
16 Sep - 14 Oct Air China
23 Sep - 21 Oct Air China
21 Sep - 04 Oct Air China
23 Sep - 14 Oct Air China
02 Sep - 04 Oct Air China
16 Sep - 04 Oct Air China
09 Sep - 04 Oct Air China
09 Sep - 07 Oct Air China
11 Sep - 18 Sep Air China
19 Sep - 30 Sep Air China
19 Sep - 26 Sep Turkish Airlines
07 Sep - 13 Sep Air China
16 Sep - 30 Sep Turkish Airlines
02 Sep - 30 Sep Air China
05 Sep - 24 Sep Turkish Airlines
15 Sep - 26 Sep Turkish Airlines
08 Sep - 25 Sep Turkish Airlines
22 Sep - 30 Sep Turkish Airlines

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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