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

Return flights

18 May - 25 May	TAP
13 May - 18 May	TAP
06 May - 18 May	TAP
13 May - 20 May	TAP
06 May - 11 May	TAP
06 May - 13 May	TAP
06 May - 20 May	TAP
06 May - 15 May	TAP
04 May - 15 May	TAP
04 May - 11 May	TAP
22 May - 03 Jun	Air Canada	direct
27 May - 03 Jun	Air Canada	direct
25 May - 18 Jun	Lufthansa	direct
22 May - 05 Jun	Air Transat	direct
30 May - 13 Jun	Air Transat	direct
26 May - 02 Jun	Air Transat	direct
28 May - 04 Jun	Air Transat	direct
30 May - 06 Jun	Air Transat	direct
22 May - 12 Jun	Air Transat	direct
19 May - 05 Jun	Air Transat	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 $444

Return flights