Cheapest return flights from Montreal to Lisbon in August from $568

Best time to book flights for Montreal (YUL) to Lisbon (LIS) flights at AirHint

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

Return flights

19 Aug - 29 Aug Azores Airlines
27 Aug - 17 Sep Air Transat
27 Aug - 17 Sep Air Transat direct
27 Aug - 03 Sep Air Transat
26 Aug - 02 Sep Air Transat
28 Aug - 04 Sep Air Transat
19 Aug - 26 Aug Air Transat direct
20 Aug - 27 Aug Air Transat direct
23 Aug - 30 Aug Azores Airlines
30 Aug - 06 Sep Air Transat
13 Aug - 27 Aug Air Transat
27 Aug - 03 Sep Air Canada direct
26 Aug - 02 Sep Air Canada direct
25 Aug - 01 Sep Air Canada direct
28 Aug - 04 Sep Air Canada direct
13 Aug - 20 Aug Air Transat
18 Aug - 25 Aug Air Transat
13 Aug - 27 Aug Air Transat direct
22 Aug - 29 Aug Air Transat
12 Aug - 19 Aug Air Transat direct

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

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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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