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

Return flights

14 May - 18 May	Azores Airlines
14 May - 25 May	Azores Airlines
14 May - 19 May	Air France
18 May - 25 May	Air France
19 May - 26 May	Air France
20 May - 27 May	Air France
05 May - 12 May	Air France
13 May - 20 May	Air France
17 May - 24 May	Air France
21 May - 28 May	Air France
07 May - 02 Jun	KLM
01 May - 01 Jun	KLM
19 May - 01 Jun	Air Canada	direct
25 May - 01 Jun	Air Canada	direct
27 May - 03 Jun	Air Canada	direct
26 May - 02 Jun	Air Canada	direct
31 May - 11 Jun	TAP
28 May - 04 Jun	Air France
31 May - 11 Jun	Air Transat	direct
01 May - 01 Jun	Lufthansa	direct

Also check the deals for one-way flights from Montreal to Barcelona 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 Barcelona in May from 532€

Return flights