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

Return flights

02 May - 11 May	Air Transat	direct
02 May - 08 May	Air Transat	direct
21 May - 01 Jun	Air Transat	direct
16 May - 20 May	Air Transat	direct
01 May - 06 May	TAP
22 May - 04 Jun	Air Transat
07 May - 17 May	SWISS
09 May - 19 May	SWISS
07 May - 17 May	Air Transat	direct
15 May - 19 May	SWISS
16 May - 22 May	Air Transat	direct
01 May - 07 May	British Airways

Also check the deals for one-way flights from Porto to Toronto 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 Porto to Toronto in May from 358€

Return flights