AirHint found the following cheapest return flights from Ottawa (YOW) to Vienna (VIE) in October 2025 (see full year).

Return flights

22 Oct - 05 Nov	Condor
20 Oct - 05 Nov	Condor
20 Oct - 12 Nov	Condor
22 Oct - 12 Nov	Condor
07 Oct - 27 Oct	Condor
07 Oct - 21 Oct	Condor
07 Oct - 29 Oct	Condor
07 Oct - 22 Oct	Condor
06 Oct - 21 Oct	Condor
07 Oct - 20 Oct	Air Transat
07 Oct - 14 Oct	Air Canada
21 Oct - 04 Nov	Air Canada
21 Oct - 11 Nov	Air Canada
08 Oct - 15 Oct	Air Canada
19 Oct - 28 Oct	Air Canada
27 Oct - 04 Nov	Air Canada
28 Oct - 18 Nov	Air Canada
14 Oct - 08 Nov	Air Transat
22 Oct - 10 Nov	Air Canada
05 Oct - 19 Oct	Condor

Also check the deals for one-way flights from Ottawa to Vienna in October.

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 Ottawa to Vienna in October from 502€

Return flights