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

Return flights

31 Aug - 11 Sep	Delta
26 Aug - 14 Sep	Delta
22 Aug - 07 Sep	TAP
13 Aug - 08 Sep	Air Transat	direct
18 Aug - 08 Sep	Air Transat	direct
24 Aug - 05 Sep	TAP
20 Aug - 28 Aug	Air Canada
30 Aug - 15 Sep	Air Canada
31 Aug - 07 Sep	Air Canada
26 Aug - 07 Sep	Air Canada
25 Aug - 01 Sep	Air Transat	direct
25 Aug - 31 Aug	Air France
24 Aug - 31 Aug	Delta
18 Aug - 25 Aug	Air Transat	direct
17 Aug - 25 Aug	Air Transat	direct
07 Aug - 20 Aug	Air Canada
04 Aug - 19 Aug	Air Transat	direct
10 Aug - 19 Aug	Air Transat	direct
06 Aug - 19 Aug	Air Transat	direct
18 Aug - 26 Aug	Air Transat

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

Book a cheap hotel in Madrid

Cheap car rent in Madrid

Cheapest return flights from Montreal to Madrid in August from $563

Return flights