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

Return flights

28 Sep - 08 Oct	WestJet
09 Sep - 17 Sep	WestJet
28 Sep - 07 Oct	WestJet
29 Sep - 06 Oct	WestJet
29 Sep - 03 Oct	WestJet
30 Sep - 21 Oct	Flair Airlines
27 Sep - 07 Oct	WestJet
16 Sep - 07 Oct	WestJet
01 Sep - 10 Sep	WestJet
16 Sep - 01 Oct	WestJet
23 Sep - 07 Oct	Porter Airlines (Canada) Ltd
09 Sep - 06 Oct	Flair Airlines
17 Sep - 24 Sep	WestJet
11 Sep - 24 Sep	Air Canada	direct
16 Sep - 24 Sep	Air Canada	direct
09 Sep - 17 Sep	Air Canada	direct
09 Sep - 19 Sep	Flair Airlines
01 Sep - 10 Sep	Lufthansa	direct
03 Sep - 09 Sep	Air Canada
16 Sep - 23 Sep	Air Canada

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.

Book a cheap hotel in Athens

Cheap car rent in Athens

Cheapest return flights from Toronto to Athens in September from $415

Return flights