Cheapest return flights from London to Sydney in September from 971€

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

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

Return flights

17 Sep - 30 Sep Air India
15 Sep - 13 Oct Vietnam Airlines
20 Sep - 04 Oct KLM
14 Sep - 06 Oct Etihad Airways
15 Sep - 06 Oct China Airlines
29 Sep - 19 Oct China Airlines
29 Sep - 31 Oct China Airlines
12 Sep - 29 Sep China Airlines
05 Sep - 21 Sep China Airlines
22 Sep - 20 Oct China Airlines
02 Sep - 05 Oct China Airlines
10 Sep - 19 Sep China Airlines
15 Sep - 25 Sep China Airlines
02 Sep - 11 Sep China Airlines
01 Sep - 26 Sep China Airlines
20 Sep - 29 Sep China Airlines
08 Sep - 22 Sep China Airlines
02 Sep - 15 Sep China Airlines
23 Sep - 05 Oct China Airlines
01 Sep - 01 Oct Scandinavian 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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