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

Return flights

14 Sep - 21 Sep	Porter Airlines (Canada) Ltd
16 Sep - 23 Sep	Air Canada
18 Sep - 25 Sep	Air Canada
23 Sep - 30 Sep	Air Canada
30 Sep - 07 Oct	Air Canada
25 Sep - 02 Oct	Air Canada
22 Sep - 29 Sep	Air Canada
15 Sep - 22 Sep	Air Canada
17 Sep - 24 Sep	Air Canada
24 Sep - 01 Oct	Air Canada
01 Sep - 22 Sep	Air Canada
10 Sep - 17 Sep	ANA
11 Sep - 18 Sep	ANA
29 Sep - 06 Oct	Air Canada
27 Sep - 04 Oct	ANA
28 Sep - 05 Oct	KLM
26 Sep - 03 Oct	Air Canada
24 Sep - 02 Oct	Emirates

Also check the deals for one-way flights from Montreal to Kuala Lumpur 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 Montreal to Kuala Lumpur in September from 935€

Return flights