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

Return flights

04 May - 26 May	Aer Lingus
07 May - 13 May	Aer Lingus
06 May - 20 May	Aer Lingus
04 May - 10 May	Air France
05 May - 10 May	Air France
11 May - 15 May	Air France
04 May - 15 May	Delta
06 May - 10 May	Air France
06 May - 12 May	Air France
03 May - 12 May	Air France
25 May - 25 Jun	Air Transat
27 May - 11 Jun	Air Transat
26 May - 06 Jun	Air Transat
27 May - 10 Jun	Air Transat
29 May - 06 Jun	Air Transat
28 May - 06 Jun	Air Transat
26 May - 05 Jun	Air Transat
27 May - 05 Jun	Air Transat
26 May - 01 Jun	Air Transat
18 May - 01 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 426€

Return flights