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

Return flights

09 May - 24 May	Air Transat	direct
18 May - 01 Jun	Air Transat	direct
25 May - 01 Jun	Air Transat	direct
23 May - 30 May	Air Transat
16 May - 27 May	Air Transat	direct
06 May - 12 May	KLM
04 May - 08 May	Air Transat	direct
07 May - 13 May	Air France
11 May - 18 May	Azores Airlines
12 May - 19 May	Azores Airlines
14 May - 21 May	Azores Airlines
19 May - 26 May	Azores Airlines
27 May - 03 Jun	Azores Airlines
28 May - 04 Jun	Azores Airlines

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 $430

Return flights