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

Return flights

23 Sep - 15 Oct	Icelandair
24 Sep - 10 Oct	Icelandair
28 Sep - 10 Oct	Icelandair
15 Sep - 01 Oct	Icelandair
28 Sep - 06 Oct	Icelandair
23 Sep - 07 Oct	Icelandair
24 Sep - 20 Oct	Icelandair
21 Sep - 05 Oct	Icelandair
20 Sep - 08 Oct	Icelandair
24 Sep - 04 Oct	Icelandair
15 Sep - 23 Sep	Icelandair
16 Sep - 27 Sep	Icelandair
17 Sep - 21 Sep	Icelandair
15 Sep - 26 Sep	Icelandair
15 Sep - 24 Sep	Icelandair
16 Sep - 23 Sep	Icelandair
15 Sep - 20 Sep	Icelandair
20 Sep - 27 Sep	Icelandair
22 Sep - 29 Sep	Icelandair
13 Sep - 22 Sep	Icelandair

Also check the deals for one-way flights from Toronto to Frankfurt 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 Frankfurt in September from $505

Return flights