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

Return flights

21 May - 28 May	Air Transat	direct
11 May - 22 May	TAP
18 May - 01 Jun	TAP
22 May - 05 Jun	TAP
31 May - 24 Jun	TAP
25 May - 01 Jun	TAP
27 May - 03 Jun	TAP
31 May - 07 Jun	TAP
31 May - 10 Jun	TAP
31 May - 17 Jun	TAP
20 May - 10 Jun	TAP
27 May - 19 Jun	TAP
04 May - 18 May	TAP
18 May - 31 May	TAP
22 May - 31 May	TAP
24 May - 31 May	TAP
04 May - 10 May	TAP
04 May - 15 May	Air Transat	direct
17 May - 25 May	Air Transat	direct
18 May - 29 May	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 394€

Return flights