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

Return flights

15 Sep - 22 Sep	Porter Airlines (Canada) Ltd
09 Sep - 22 Sep	Porter Airlines (Canada) Ltd
09 Sep - 16 Sep	WestJet
09 Sep - 23 Sep	WestJet
15 Sep - 24 Sep	Porter Airlines (Canada) Ltd
30 Sep - 21 Oct	Aer Lingus
09 Sep - 24 Sep	WestJet
30 Sep - 13 Oct	Aer Lingus
09 Sep - 30 Sep	WestJet
08 Sep - 17 Sep	Aer Lingus
17 Sep - 24 Sep	Porter Airlines (Canada) Ltd
22 Sep - 29 Sep	Aer Lingus
17 Sep - 08 Oct	Aer Lingus
17 Sep - 13 Oct	Aer Lingus
29 Sep - 15 Oct	Aer Lingus
16 Sep - 07 Oct	Aer Lingus
23 Sep - 07 Oct	Aer Lingus
16 Sep - 01 Oct	Condor
17 Sep - 01 Oct	Condor
25 Sep - 02 Oct	Condor

Also check the deals for one-way flights from Toronto to Vienna 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 Vienna in September from $499

Return flights