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

Return flights

02 Sep - 11 Sep	VietJet Air
02 Sep - 16 Sep	VietJet Air
02 Sep - 24 Sep	VietJet Air
03 Sep - 10 Sep	VietJet Air
13 Sep - 20 Sep	AirAsia X
09 Sep - 14 Sep	Scoot
09 Sep - 24 Sep	Scoot
09 Sep - 22 Sep	Scoot
09 Sep - 21 Sep	Scoot
14 Sep - 28 Sep	AirAsia X
30 Sep - 17 Oct	Etihad Airways
09 Sep - 15 Oct	Scoot
09 Sep - 20 Oct	Scoot
17 Sep - 01 Oct	AirAsia X
14 Sep - 01 Oct	AirAsia X
16 Sep - 02 Oct	AirAsia X
17 Sep - 02 Oct	AirAsia X
18 Sep - 01 Oct	AirAsia X
14 Sep - 04 Oct	AirAsia X
19 Sep - 02 Oct	VietJet Air

Also check the deals for one-way flights from Sydney to Athens 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 Athens in September from $1031

Return flights