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

Return flights

20 Aug - 08 Sep	Air Transat
27 Aug - 03 Sep	Air Transat
26 Aug - 02 Sep	Air Transat
25 Aug - 01 Sep	Air Transat
26 Aug - 01 Sep	Air Transat
31 Aug - 07 Sep	WestJet
25 Aug - 10 Sep	Air Transat
05 Aug - 05 Sep	Porter Airlines (Canada) Ltd
19 Aug - 26 Aug	Air Transat
20 Aug - 27 Aug	Air Transat
12 Aug - 26 Aug	Air Transat
21 Aug - 11 Sep	Condor
24 Aug - 31 Aug	Air Transat
18 Aug - 25 Aug	Air Transat
30 Aug - 13 Sep	Air Transat
19 Aug - 24 Aug	FrenchBee
21 Aug - 28 Aug	FrenchBee
05 Aug - 12 Aug	Air Transat
22 Aug - 29 Aug	Air Transat
10 Aug - 17 Aug	WestJet

Also check the deals for one-way flights from Montreal to Vienna in August.

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 August from $695

Return flights