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

Return flights

03 Oct - 10 Oct	FrenchBee
01 Oct - 08 Oct	Air Transat
01 Oct - 15 Oct	FrenchBee
08 Oct - 15 Oct	FrenchBee
04 Oct - 13 Oct	Air Transat
01 Oct - 13 Oct	FrenchBee
13 Oct - 23 Oct	Air Transat
03 Oct - 17 Oct	FrenchBee
03 Oct - 13 Oct	FrenchBee
10 Oct - 17 Oct	FrenchBee
31 Oct - 07 Nov	Air Canada	direct
29 Oct - 05 Nov	Air Canada
30 Oct - 06 Nov	Air Canada
27 Oct - 03 Nov	Air Canada
28 Oct - 04 Nov	SWISS
25 Oct - 01 Nov	Air Canada
26 Oct - 02 Nov	SWISS
29 Oct - 05 Nov	Aegean Airlines	direct
26 Oct - 02 Nov	Lufthansa	direct

Also check the deals for one-way flights from Montreal to Athens in October.

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 October from $597

Return flights