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

Return flights

29 Sep - 06 Oct	TAP
23 Sep - 30 Sep	Icelandair
11 Sep - 20 Sep	WestJet
21 Sep - 27 Sep	TAP
20 Sep - 08 Oct	WestJet
21 Sep - 29 Sep	TAP
19 Sep - 29 Sep	TAP
11 Sep - 10 Oct	WestJet
01 Sep - 07 Sep	Icelandair
20 Sep - 26 Sep	Icelandair
15 Sep - 29 Sep	Icelandair
03 Sep - 30 Sep	Icelandair
01 Sep - 08 Sep	Icelandair
29 Sep - 07 Oct	Condor	direct
11 Sep - 10 Oct	Condor	direct
20 Sep - 08 Oct	Condor	direct
16 Sep - 01 Oct	Condor	direct
27 Sep - 02 Oct	Condor	direct
29 Sep - 19 Oct	Air Transat
14 Sep - 01 Oct	WestJet

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 445€

Return flights