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

One-Way flights

23 Sep	Porter Airlines (Canada) Ltd
14 Sep	Porter Airlines (Canada) Ltd
22 Sep	Air Transat
01 Sep	Air Transat
02 Sep	Air Transat
13 Sep	Air Transat
05 Sep	Air Transat
11 Sep	Porter Airlines (Canada) Ltd
07 Sep	Air Transat
06 Sep	Porter Airlines (Canada) Ltd

Also check the deals for return 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 one-way flights from Toronto to Athens in September from $294

One-Way flights