Cheapest return flights from Montreal to Keflavik in September from 522€

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

Return flights

23 Sep - 30 Sep Air Canada
30 Sep - 07 Oct Air Canada
22 Sep - 06 Oct Air Canada
25 Sep - 02 Oct Air Canada
29 Sep - 06 Oct Porter Airlines (Canada) Ltd
27 Sep - 01 Oct Porter Airlines (Canada) Ltd
27 Sep - 04 Oct Air Canada
30 Sep - 05 Oct Air Canada direct
28 Sep - 05 Oct Air Canada
24 Sep - 01 Oct Porter Airlines (Canada) Ltd
27 Sep - 03 Oct Air Canada direct
17 Sep - 22 Sep WestJet
23 Sep - 28 Sep Porter Airlines (Canada) Ltd
17 Sep - 24 Sep WestJet
20 Sep - 26 Sep Porter Airlines (Canada) Ltd
21 Sep - 28 Sep TAP
20 Sep - 28 Sep Porter Airlines (Canada) Ltd
20 Sep - 25 Sep Porter Airlines (Canada) Ltd
22 Sep - 29 Sep Porter Airlines (Canada) Ltd
19 Sep - 26 Sep Porter Airlines (Canada) Ltd

Also check the deals for one-way flights from Montreal to Keflavik in September.

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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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