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

Return flights

04 Sep - 26 Oct	easyJet
03 Sep - 26 Oct	easyJet
06 Sep - 13 Sep	easyJet
10 Sep - 17 Sep	easyJet
03 Sep - 22 Sep	easyJet
04 Sep - 18 Sep	easyJet
11 Sep - 18 Sep	easyJet
03 Sep - 17 Sep	easyJet
13 Sep - 02 Oct	easyJet
13 Sep - 20 Sep	easyJet
01 Sep - 23 Sep	Air India
01 Sep - 15 Sep	Air India
19 Sep - 18 Oct	Air China
05 Sep - 24 Sep	Lufthansa
27 Sep - 11 Oct	easyJet
21 Sep - 02 Oct	Lufthansa
24 Sep - 09 Oct	Turkmenistan Airlines
27 Sep - 24 Oct	easyJet
26 Sep - 14 Oct	Austrian Airlines
15 Sep - 30 Oct	Air India

Also check the deals for one-way flights from Frankfurt to Sydney 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 Frankfurt to Sydney in September from $1065

Return flights