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

Return flights

20 May - 24 May	TAP	direct
10 May - 24 May	Air Transat	direct
08 May - 23 May	Air Transat	direct
01 May - 17 May	Air Transat
01 May - 10 May	Air Transat	direct
28 May - 11 Jun	Lufthansa
16 May - 23 May	Air Transat
01 May - 31 May	Air Transat	direct
01 May - 17 May	Air Canada	direct
16 May - 20 May	Air Transat
01 May - 09 May	Air Canada
31 May - 09 Jun	Air Transat
28 May - 11 Jun	TAP	direct
31 May - 13 Jun	TAP	direct
31 May - 09 Jun	TAP	direct

Also check the deals for one-way flights from Lisbon 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 Lisbon to Toronto in May from $457

Return flights