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

Return flights

05 Dec - 14 Dec	Lufthansa
12 Dec - 14 Jan	British Airways
12 Dec - 13 Jan	British Airways
29 Dec - 24 Jan	LOT
30 Dec - 07 Jan	KLM
30 Dec - 06 Jan	KLM
16 Dec - 13 Jan	KLM
15 Dec - 31 Dec	Icelandair
25 Dec - 09 Jan	Porter Airlines (Canada) Ltd
16 Dec - 31 Dec	KLM
21 Dec - 26 Dec	KLM
22 Dec - 30 Dec	Porter Airlines (Canada) Ltd
22 Dec - 09 Jan	Air Canada
23 Dec - 09 Jan	Air Canada
24 Dec - 09 Jan	Air Canada
17 Dec - 30 Dec	KLM
24 Dec - 31 Dec	TAP
19 Dec - 30 Dec	KLM

Also check the deals for one-way flights from Toronto to Athens 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 Toronto to Athens in December from $626

Return flights