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

Return flights

11 May - 18 May	TAP
13 May - 20 May	TAP
13 May - 18 May	TAP
06 May - 12 May	TAP
15 May - 22 May	TAP
04 May - 11 May	Air Transat
05 May - 12 May	Air Transat
01 May - 12 May	Air Transat
19 May - 05 Jun	Delta
28 May - 12 Jun	Air France
20 May - 27 May	Air France
04 May - 13 May	Air France
29 May - 05 Jun	Air France
23 May - 19 Jun	Delta
26 May - 02 Jun	Air France
31 May - 16 Jun	Air France
25 May - 01 Jun	TAP
27 May - 03 Jun	TAP
19 May - 05 Jun	Air Transat	direct
13 May - 06 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 $426

Return flights