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

Return flights

03 Dec - 10 Dec	British Airways
02 Dec - 09 Dec	British Airways
08 Dec - 15 Dec	British Airways
09 Dec - 16 Dec	British Airways
10 Dec - 17 Dec	British Airways
04 Dec - 11 Dec	British Airways
06 Dec - 13 Dec	Air France
14 Dec - 21 Dec	British Airways
30 Dec - 06 Jan	British Airways
11 Dec - 18 Dec	British Airways
13 Dec - 20 Dec	British Airways
25 Dec - 01 Jan	Air France
24 Dec - 11 Jan	KLM
29 Dec - 05 Jan	TAP
28 Dec - 04 Jan	TAP
26 Dec - 02 Jan	KLM
27 Dec - 03 Jan	Air Canada
21 Dec - 04 Jan	TAP
20 Dec - 03 Jan	Air Canada
19 Dec - 04 Jan	KLM

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 584€

Return flights