Cheapest return flights from Montreal to Lisbon in September from $534

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 September 2025 (see full year).

Return flights

24 Sep - 01 Oct TAP direct
25 Sep - 02 Oct TAP direct
26 Sep - 03 Oct TAP direct
28 Sep - 05 Oct TAP direct
29 Sep - 06 Oct TAP direct
18 Sep - 02 Oct TAP direct
22 Sep - 29 Sep TAP direct
18 Sep - 25 Sep TAP direct
21 Sep - 28 Sep TAP direct
19 Sep - 26 Sep TAP direct
16 Sep - 28 Sep Azores Airlines
09 Sep - 16 Sep Air Transat direct
10 Sep - 17 Sep Air Transat direct
17 Sep - 24 Sep TAP direct
24 Sep - 09 Oct Air Transat direct
08 Sep - 29 Sep Air Transat direct
03 Sep - 10 Sep Air Transat
30 Sep - 07 Oct Air Transat
30 Sep - 07 Oct Air Canada direct
27 Sep - 04 Oct Azores Airlines

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

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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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