Cheapest return flights from Toronto to Keflavik in May from $748

AirHint found the following cheapest return flights from Toronto (YTZ) to Keflavik (KEF) in May 2026 (see full year).

Return flights

14 May - 06 Jun Air Canada
15 May - 06 Jun Porter Airlines (Canada) Ltd
22 May - 06 Jun Porter Airlines (Canada) Ltd
08 May - 15 May Porter Airlines (Canada) Ltd
29 May - 07 Jun Porter Airlines (Canada) Ltd
22 May - 25 May Porter Airlines (Canada) Ltd
05 May - 08 May Porter Airlines (Canada) Ltd
15 May - 26 May SWISS
12 May - 22 May Porter Airlines (Canada) Ltd

Also check the deals for one-way flights from Toronto to Keflavik in May.

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