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

Return flights

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

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 857€

Return flights