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

Return flights

27 Sep - 08 Oct	Air Transat
25 Sep - 06 Oct	Air Transat
23 Sep - 10 Oct	Porter Airlines (Canada) Ltd
26 Sep - 06 Oct	Porter Airlines (Canada) Ltd
28 Sep - 18 Oct	Air Transat
19 Sep - 05 Oct	Air Transat
19 Sep - 04 Oct	Air Transat
27 Sep - 18 Oct	Air Transat
23 Sep - 30 Sep	Air Transat
25 Sep - 02 Oct	Air Transat
29 Sep - 21 Oct	Porter Airlines (Canada) Ltd
19 Sep - 28 Sep	Air Transat
25 Sep - 30 Sep	Air Transat
22 Sep - 29 Sep	Air Transat
28 Sep - 30 Sep	Air Transat
18 Sep - 27 Sep	Emirates
26 Sep - 27 Sep	Emirates
22 Sep - 30 Sep	Emirates
19 Sep - 30 Sep	Emirates
18 Sep - 22 Sep	Emirates

Also check the deals for one-way flights from Toronto to Athens 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 Toronto to Athens in September from 656€

Return flights