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

Return flights

10 Sep - 17 Sep	FrenchBee
30 Sep - 13 Oct	Air Canada
23 Sep - 15 Oct	Brussels Airlines	direct
28 Sep - 21 Oct	Condor
28 Sep - 22 Oct	Condor
09 Sep - 16 Sep	WestJet
30 Sep - 07 Oct	Air Canada
19 Sep - 26 Sep	FrenchBee
28 Sep - 22 Oct	Brussels Airlines	direct
28 Sep - 18 Oct	Air Canada
28 Sep - 19 Oct	Air Canada
28 Sep - 20 Oct	Air Canada
15 Sep - 11 Oct	Air Canada
07 Sep - 14 Sep	FrenchBee
17 Sep - 24 Sep	FrenchBee
14 Sep - 21 Sep	FrenchBee
08 Sep - 15 Sep	FrenchBee
15 Sep - 21 Sep	FrenchBee
15 Sep - 28 Sep	FrenchBee
23 Sep - 30 Sep	Brussels Airlines

Also check the deals for one-way flights from Montreal 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.

Book a cheap hotel in Vienna

Cheap car rent in Vienna

Cheapest return flights from Montreal to Vienna in September from 511€

Return flights