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

One-Way flights

09 Sep	SKY express
12 Sep	Transavia France
11 Sep	Transavia France
16 Sep	Transavia France
26 Sep	Transavia France
19 Sep	Transavia France
17 Sep	Volotea
29 Sep	Ryanair
30 Sep	Ryanair
07 Sep	SKY express

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

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 Athens to Montreal in September from $348

One-Way flights