AirHint found the following cheapest return flights from Toulouse (TLS) to Montreal (YUL) in September 2025 (see full year).

Return flights

15 Sep - 01 Oct	Air Canada	direct
01 Sep - 22 Sep	Air Transat	direct
12 Sep - 30 Sep	Lufthansa
06 Sep - 14 Sep	Air Transat	direct
01 Sep - 08 Sep	Air Transat	direct
01 Sep - 14 Sep	Air Transat	direct
22 Sep - 10 Oct	Air Transat	direct
08 Sep - 28 Sep	Lufthansa
08 Sep - 15 Sep	Lufthansa
08 Sep - 18 Sep	Lufthansa
09 Sep - 18 Sep	Air Canada
22 Sep - 06 Oct	Air Canada
22 Sep - 02 Oct	Air Canada
25 Sep - 23 Oct	Lufthansa
16 Sep - 14 Oct	Lufthansa
30 Sep - 14 Oct	Lufthansa
02 Sep - 12 Sep	Air Transat	direct
23 Sep - 05 Oct	Air Canada
12 Sep - 14 Oct	Air Canada
22 Sep - 06 Oct	Air Transat	direct

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

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 Toulouse to Montreal in September from 343€

Return flights