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

Return flights

11 Sep - 02 Oct	TAP
09 Sep - 21 Sep	Air France
09 Sep - 30 Sep	Air France
09 Sep - 16 Oct	Air France
04 Sep - 08 Sep	Air France
05 Sep - 04 Oct	Air France
04 Sep - 23 Sep	Air France
11 Sep - 03 Oct	TAP
10 Sep - 23 Sep	Lufthansa
23 Sep - 30 Sep	Lufthansa
06 Sep - 13 Sep	Air France
10 Sep - 23 Sep	Air Transat	direct
08 Sep - 17 Sep	Air Transat	direct
09 Sep - 30 Sep	Air Transat	direct
20 Sep - 04 Oct	Lufthansa
25 Sep - 09 Oct	Lufthansa
15 Sep - 01 Oct	Lufthansa
30 Sep - 09 Oct	Air Canada
28 Sep - 14 Oct	Lufthansa
29 Sep - 14 Oct	Air Canada

Also check the deals for one-way flights from Lyon 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 Lyon to Montreal in September from 390€

Return flights