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

Return flights

14 Oct - 21 Oct	Air Canada	direct
01 Oct - 08 Oct	Air Canada
07 Oct - 14 Oct	Air Canada
21 Oct - 28 Oct	Air Canada
08 Oct - 15 Oct	Air Canada
15 Oct - 22 Oct	Air Canada
01 Oct - 22 Oct	Air Canada
08 Oct - 22 Oct	Lufthansa
13 Oct - 20 Oct	Air Canada	direct
30 Oct - 13 Nov	Air Canada	direct
30 Oct - 06 Nov	Air Canada	direct
09 Oct - 16 Oct	Air Canada
29 Oct - 05 Nov	Air Canada
28 Oct - 04 Nov	Air Canada
27 Oct - 03 Nov	Air Canada
25 Oct - 01 Nov	Air Canada
26 Oct - 02 Nov	Air Canada
27 Oct - 03 Nov	Austrian Airlines	direct
25 Oct - 01 Nov	Austrian Airlines	direct

Also check the deals for one-way flights from Montreal 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 Montreal to Vienna in October from 512€

Return flights