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

Return flights

23 Sep - 13 Oct	British Airways
15 Sep - 20 Oct	British Airways
12 Sep - 17 Sep	British Airways
02 Sep - 11 Sep	British Airways
17 Sep - 30 Sep	British Airways
02 Sep - 10 Sep	British Airways
19 Sep - 05 Oct	British Airways
15 Sep - 15 Oct	British Airways
14 Sep - 20 Sep	Lufthansa
08 Sep - 22 Sep	Air Dolomiti
04 Sep - 11 Sep	Air Dolomiti
13 Sep - 27 Sep	Air Dolomiti
15 Sep - 22 Sep	Air Dolomiti
03 Sep - 16 Sep	Lufthansa
25 Sep - 13 Oct	Air Canada
01 Sep - 01 Oct	KLM
27 Sep - 04 Oct	Lufthansa
21 Sep - 04 Oct	Austrian Airlines
25 Sep - 10 Oct	Lufthansa
26 Sep - 10 Oct	Lufthansa

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 357€

Return flights