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

Return flights

04 Dec - 08 Dec	Porter Airlines (Canada) Ltd
03 Dec - 10 Dec	Air France
02 Dec - 09 Dec	Air France
01 Dec - 08 Dec	Air France
05 Dec - 12 Dec	Air France
07 Dec - 14 Dec	Air France
09 Dec - 16 Dec	Air France
11 Dec - 18 Dec	Air France
04 Dec - 11 Dec	Air France
08 Dec - 15 Dec	Air France
02 Dec - 08 Jan	Air France
31 Dec - 07 Jan	SWISS
25 Dec - 01 Jan	Air France
30 Dec - 06 Jan	SWISS
29 Dec - 05 Jan	TAP
26 Dec - 02 Jan	TAP
28 Dec - 04 Jan	TAP
27 Dec - 03 Jan	Air Canada
21 Dec - 02 Jan	TAP
19 Dec - 04 Jan	TAP

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 619€

Return flights