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

Return flights

22 Oct - 30 Nov	FrenchBee
22 Oct - 23 Nov	FrenchBee
22 Oct - 16 Nov	FrenchBee
22 Oct - 09 Nov	FrenchBee
14 Oct - 14 Nov	Air Transat
22 Oct - 04 Nov	British Airways
22 Oct - 11 Nov	British Airways
22 Oct - 12 Nov	British Airways
22 Oct - 17 Nov	British Airways
22 Oct - 19 Nov	British Airways
22 Oct - 27 Oct	British Airways
22 Oct - 28 Oct	British Airways
06 Oct - 15 Oct	FrenchBee
21 Oct - 28 Oct	British Airways
06 Oct - 13 Oct	FrenchBee
04 Oct - 15 Oct	Air Transat
01 Oct - 08 Oct	FrenchBee
03 Oct - 10 Oct	FrenchBee
02 Oct - 10 Oct	Air Transat
05 Oct - 20 Oct	Air Transat

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 440€

Return flights