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

Return flights

28 Aug - 04 Sep	Air Canada
26 Aug - 04 Sep	Air Canada
26 Aug - 03 Sep	Lufthansa
30 Aug - 07 Sep	Air Canada
21 Aug - 26 Aug	SWISS
28 Aug - 12 Sep	SWISS
27 Aug - 31 Aug	Lufthansa
25 Aug - 12 Sep	SWISS
22 Aug - 07 Sep	Brussels Airlines
22 Aug - 03 Sep	Brussels Airlines
22 Aug - 05 Sep	Brussels Airlines
23 Aug - 02 Sep	Brussels Airlines
20 Aug - 26 Aug	SWISS
28 Aug - 31 Aug	Air Canada
22 Aug - 27 Aug	United
20 Aug - 30 Aug	United
22 Aug - 29 Aug	Air Canada
13 Aug - 20 Aug	Air Canada
29 Aug - 31 Aug	Lufthansa
28 Aug - 31 Aug	Air Transat	direct

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

Cheap car rent in Montreal

Cheapest return flights from Madrid to Montreal in August from 403€

Return flights