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

Return flights

15 Dec - 30 Jan	Wizz Air
13 Dec - 18 Jan	Ryanair
26 Dec - 22 Jan	Sichuan Airlines
14 Dec - 11 Jan	Ryanair
01 Dec - 10 Dec	Scoot
19 Dec - 30 Jan	Sichuan Airlines
15 Dec - 12 Jan	Wizz Air
01 Dec - 08 Dec	Scoot
03 Dec - 10 Dec	Gulf Air
02 Dec - 16 Jan	Aegean Airlines
04 Dec - 11 Dec	Gulf Air
02 Dec - 09 Dec	Aegean Airlines
19 Dec - 27 Jan	Sichuan Airlines
12 Dec - 28 Dec	Scoot
19 Dec - 31 Jan	Sichuan Airlines
13 Dec - 28 Dec	Ryanair
12 Dec - 31 Dec	Scoot
01 Dec - 12 Dec	Ryanair
20 Dec - 29 Jan	Ryanair
06 Dec - 14 Dec	Ryanair

Also check the deals for one-way flights from Athens to Sydney in December.

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 Athens to Sydney in December from 768€

Return flights