AirHint found the following cheapest return flights from Montreal (YUL) to Lisbon (LIS) in June 2025 (see full year).

Return flights

30 Jun - 08 Jul	Air Transat	direct
30 Jun - 03 Jul	Air Transat	direct
30 Jun - 21 Jul	Air Transat
30 Jun - 14 Jul	Air Transat	direct
30 Jun - 20 Jul	Air Transat
30 Jun - 12 Jul	Air Transat
30 Jun - 05 Jul	Air Transat
30 Jun - 13 Jul	Air Transat	direct
30 Jun - 10 Jul	TAP
30 Jun - 09 Jul	TAP

Also check the deals for one-way flights from Montreal to Lisbon in June.

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 Montreal to Lisbon in June from $930

Return flights