AirHint found the following cheapest one-way flights from Montreal (YUL) to Athens (ATH) in August 2025 (see full year).

One-Way flights

31 Aug	WestJet
24 Aug	FrenchBee
04 Aug	Porter Airlines (Canada) Ltd
30 Aug	FrenchBee
18 Aug	WestJet
22 Aug	Porter Airlines (Canada) Ltd
03 Aug	Porter Airlines (Canada) Ltd
04 Aug	Air Transat	direct
18 Aug	Air Transat	direct
23 Aug	Air Transat

Also check the deals for return flights from Montreal to Athens in August.

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 one-way flights from Montreal to Athens in August from $349

One-Way flights