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

Return flights

13 Jul - 18 Jul	Delta
06 Jul - 10 Jul	Delta
07 Jul - 18 Jul	Delta
06 Jul - 20 Jul	Delta
07 Jul - 17 Jul	Delta
13 Jul - 20 Jul	Delta
21 Jul - 25 Aug	TAP	direct
28 Jul - 25 Aug	TAP	direct
19 Jul - 26 Jul	British Airways
17 Jul - 29 Jul	British Airways
14 Jul - 21 Jul	British Airways
16 Jul - 23 Jul	British Airways
22 Jul - 27 Aug	British Airways
29 Jul - 06 Aug	British Airways
23 Jul - 09 Aug	British Airways
27 Jul - 09 Aug	British Airways
27 Jul - 10 Aug	British Airways
22 Jul - 27 Aug	Air Transat	direct
26 Jul - 30 Aug	Air Transat
28 Jul - 11 Aug	Air Transat	direct

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

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 July from $719

Return flights