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

One-Way flights

29 Sep	Porter Airlines (Canada) Ltd
28 Sep	WestJet
30 Sep	Air Transat
21 Sep	WestJet
23 Sep	WestJet
26 Sep	WestJet
27 Sep	Air Transat
26 Sep	Air Transat	direct
25 Sep	Air Transat
28 Sep	Air Transat	direct

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.

Book a cheap hotel in Athens

Cheap car rent in Athens

Cheapest one-way flights from Toronto to Athens in September from $247

One-Way flights