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
20 Sep - 30 Sep	WestJet
25 Sep - 02 Oct	Condor
17 Sep - 01 Oct	Condor
17 Sep - 07 Oct	Condor
11 Sep - 09 Oct	WestJet
20 Sep - 27 Sep	WestJet
04 Sep - 25 Sep	Porter Airlines (Canada) Ltd
04 Sep - 08 Sep	Aer Lingus
02 Sep - 18 Sep	Condor
17 Sep - 14 Oct	Condor
11 Sep - 05 Oct	Condor
01 Sep - 13 Oct	WestJet
16 Sep - 29 Sep	Flair Airlines
01 Sep - 15 Sep	WestJet
15 Sep - 29 Sep	WestJet
14 Sep - 29 Sep	Flair Airlines
17 Sep - 07 Oct	Brussels Airlines	direct
11 Sep - 09 Oct	Brussels Airlines	direct
25 Sep - 02 Oct	Brussels Airlines	direct

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 435€

Return flights