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

Return flights

24 Sep - 07 Oct	Icelandair
16 Sep - 29 Sep	WestJet
08 Sep - 17 Sep	Condor	direct
15 Sep - 03 Oct	Condor	direct
24 Sep - 07 Oct	Condor	direct
10 Sep - 24 Sep	Air Transat
10 Sep - 24 Sep	Condor	direct
04 Sep - 18 Sep	Condor	direct
12 Sep - 30 Sep	Condor	direct
22 Sep - 25 Sep	Condor	direct
17 Sep - 01 Oct	Condor	direct
21 Sep - 02 Oct	Condor	direct
01 Sep - 08 Sep	Condor	direct
23 Sep - 30 Sep	Condor	direct
01 Sep - 15 Sep	Condor	direct
23 Sep - 21 Oct	Condor	direct
28 Sep - 19 Oct	Condor	direct
22 Sep - 06 Oct	Condor	direct
16 Sep - 01 Oct	Condor	direct
10 Sep - 29 Oct	Condor	direct

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 436€

Return flights