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

Return flights

29 Sep - 06 Oct	Porter Airlines (Canada) Ltd
29 Sep - 29 Oct	Porter Airlines (Canada) Ltd
30 Sep - 28 Oct	Air Transat
29 Sep - 25 Oct	British Airways
26 Sep - 07 Oct	Condor
26 Sep - 03 Oct	Condor
26 Sep - 09 Oct	Condor
28 Sep - 20 Oct	WestJet
27 Sep - 03 Oct	WestJet
21 Sep - 02 Oct	WestJet
26 Sep - 29 Sep	Condor
18 Sep - 22 Sep	Air Transat
26 Sep - 30 Sep	Condor
19 Sep - 22 Sep	WestJet
22 Sep - 29 Sep	Air Transat
18 Sep - 26 Sep	Air Transat
20 Sep - 22 Sep	Air Transat
18 Sep - 27 Sep	Air Transat
26 Sep - 28 Sep	Air Transat
21 Sep - 22 Sep	WestJet

Also check the deals for one-way flights from Toronto to Zagreb 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 Zagreb in September from $627

Return flights