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

Return flights

01 Dec - 23 Dec	WestJet
09 Dec - 13 Dec	WestJet
03 Dec - 14 Dec	Condor
02 Dec - 11 Dec	British Airways
03 Dec - 12 Dec	Condor
03 Dec - 17 Dec	Condor
23 Dec - 13 Jan	British Airways
05 Dec - 15 Dec	British Airways
31 Dec - 20 Jan	British Airways
30 Dec - 19 Jan	British Airways
08 Dec - 23 Dec	Air France
09 Dec - 23 Dec	KLM
03 Dec - 23 Dec	KLM
31 Dec - 24 Jan	British Airways
30 Dec - 08 Jan	WestJet
23 Dec - 08 Jan	British Airways
24 Dec - 14 Jan	KLM
24 Dec - 07 Jan	KLM
16 Dec - 06 Jan	WestJet
17 Dec - 14 Jan	Air Canada

Also check the deals for one-way flights from Calgary 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 Calgary to Athens in December from $527

Return flights