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

Return flights

12 Oct - 15 Oct	FrenchBee
08 Oct - 15 Oct	FrenchBee
01 Oct - 22 Oct	FrenchBee
15 Oct - 09 Nov	FrenchBee
01 Oct - 15 Oct	FrenchBee
03 Oct - 08 Oct	FrenchBee
10 Oct - 22 Oct	FrenchBee
10 Oct - 20 Oct	FrenchBee
13 Oct - 20 Oct	FrenchBee
19 Oct - 09 Nov	Air Transat
04 Oct - 13 Oct	Air Transat
01 Oct - 08 Oct	FrenchBee
03 Oct - 07 Nov	FrenchBee
28 Oct - 04 Nov	Air Transat
18 Oct - 08 Nov	Air Transat
06 Oct - 01 Nov	FrenchBee
30 Oct - 06 Nov	Air Transat
08 Oct - 03 Nov	FrenchBee
08 Oct - 01 Nov	FrenchBee
24 Oct - 06 Nov	KLM

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 543€

Return flights