Cheapest return flights from Montreal to Keflavik in October from $1029

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

Return flights

31 Oct - 07 Nov Porter Airlines (Canada) Ltd
28 Oct - 04 Nov Porter Airlines (Canada) Ltd
27 Oct - 31 Oct Porter Airlines (Canada) Ltd
29 Oct - 05 Nov Porter Airlines (Canada) Ltd
30 Oct - 06 Nov WestJet
27 Oct - 03 Nov Porter Airlines (Canada) Ltd
29 Oct - 02 Nov Porter Airlines (Canada) Ltd
26 Oct - 02 Nov Porter Airlines (Canada) Ltd

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

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