AirHint found the following cheapest return flights from Montreal (YUL) to Madrid (MAD) in May 2026 (see full year).

Return flights

18 May - 25 May	Air France
07 May - 17 May	KLM
04 May - 11 May	KLM
06 May - 13 May	KLM
10 May - 17 May	KLM
20 May - 27 May	KLM
05 May - 12 May	Air France
08 May - 15 May	Air France
14 May - 28 May	Air France
15 May - 28 May	Air France
25 May - 02 Jun	Air Transat
31 May - 07 Jun	Air Transat
25 May - 01 Jun	Air Transat
24 May - 14 Jun	Air Transat
28 May - 04 Jun	Air France
26 May - 02 Jun	Air Canada	direct
27 May - 03 Jun	Air Canada
29 May - 05 Jun	Air Transat
30 May - 06 Jun	Air Transat
29 May - 05 Jun	Air Canada	direct

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

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 Madrid in May from $522

Return flights