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

Return flights

15 Sep - 02 Oct	Ryanair
26 Sep - 10 Oct	Icelandair
19 Sep - 04 Oct	Icelandair
09 Sep - 23 Sep	Icelandair
19 Sep - 05 Oct	Icelandair
10 Sep - 10 Oct	Icelandair
10 Sep - 23 Sep	Icelandair
03 Sep - 24 Sep	Icelandair
03 Sep - 13 Sep	Icelandair
22 Sep - 06 Oct	Ryanair
03 Sep - 11 Sep	Ryanair
24 Sep - 05 Oct	Ryanair
16 Sep - 29 Sep	Ryanair
15 Sep - 29 Sep	Aer Lingus
22 Sep - 28 Sep	Ryanair
15 Sep - 28 Sep	Ryanair
22 Sep - 29 Sep	Aer Lingus
26 Sep - 07 Oct	Icelandair
16 Sep - 07 Oct	Aer Lingus
21 Sep - 14 Oct	Icelandair

Also check the deals for one-way flights from Frankfurt to Toronto 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 Frankfurt to Toronto in September from 410€

Return flights