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

Return flights

06 Dec - 13 Dec	SWISS
03 Dec - 10 Dec	Air France
02 Dec - 09 Dec	Air France
04 Dec - 08 Dec	Air France
01 Dec - 08 Dec	Air France
07 Dec - 14 Dec	Air France
08 Dec - 15 Dec	Air France
09 Dec - 16 Dec	Air France
04 Dec - 11 Dec	Air France
10 Dec - 17 Dec	British Airways
26 Dec - 09 Jan	TAP
29 Dec - 05 Jan	TAP
30 Dec - 06 Jan	British Airways
25 Dec - 01 Jan	Air Canada
27 Dec - 03 Jan	Air Canada

Also check the deals for one-way flights from Montreal 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 Montreal to Athens in December from $595

Return flights