Cheapest one-way flights from Montreal to Keflavik in September from $293

AirHint found the following cheapest one-way flights from Montreal (YUL) to Keflavik (KEF) in September 2025 (see full year).

One-Way flights

09 Sep Air Canada
20 Sep Air Canada
20 Sep Air Canada direct
11 Sep Air Canada
02 Sep Porter Airlines (Canada) Ltd
05 Sep Porter Airlines (Canada) Ltd
06 Sep Porter Airlines (Canada) Ltd
01 Sep Air Canada
11 Sep Air Canada direct
09 Sep Air Canada direct

Also check the deals for return flights from Montreal to Keflavik in September.

Skyscanner

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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