AirHint found the following cheapest return flights from Athens (ATH) to Toronto (YYZ) in September 2025 (see full year).

Return flights

19 Sep - 29 Sep	Air Transat
19 Sep - 26 Sep	Air Transat
19 Sep - 05 Oct	Air Transat
17 Sep - 20 Oct	Transavia France
22 Sep - 29 Sep	Pegasus Airlines
18 Sep - 15 Oct	Transavia France
18 Sep - 29 Sep	easyJet
23 Sep - 21 Oct	Ryanair
23 Sep - 22 Oct	Ryanair
23 Sep - 30 Sep	SKY express
18 Sep - 14 Oct	easyJet
18 Sep - 30 Sep	Transavia France
23 Sep - 28 Sep	SKY express
17 Sep - 30 Sep	Transavia France
20 Sep - 27 Sep	Air Transat
19 Sep - 13 Oct	ITA Airways
20 Sep - 05 Oct	Air Transat	direct
24 Sep - 22 Oct	Ryanair
17 Sep - 02 Oct	Transavia France
16 Sep - 26 Sep	Air Transat

Also check the deals for one-way flights from Athens to Toronto 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 return flights from Athens to Toronto in September from $624

Return flights