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

Return flights

05 May - 11 May	Porter Airlines (Canada) Ltd
04 May - 11 May	Air Transat
13 May - 20 May	Air Transat
23 May - 30 May	Air Transat
14 May - 21 May	Air Transat
12 May - 03 Jun	Air Transat
06 May - 12 May	Air Transat
27 May - 03 Jun	Air Transat
23 May - 07 Jun	Air Transat
27 May - 12 Jun	Air Transat
15 May - 23 May	Air Transat
04 May - 13 May	Air Transat
18 May - 25 May	Air Transat
08 May - 15 May	Air Transat
27 May - 11 Jun	SWISS
30 May - 11 Jun	Air Transat
21 May - 25 Jun	Air Transat

Also check the deals for one-way flights from Toronto 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 Toronto to Barcelona in May from $525

Return flights