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

Return flights

01 Oct - 22 Oct	Icelandair	direct
01 Oct - 08 Oct	Icelandair	direct
03 Oct - 08 Oct	Icelandair	direct
07 Oct - 16 Oct	Icelandair	direct
08 Oct - 22 Oct	Icelandair	direct
03 Oct - 06 Oct	Icelandair	direct
11 Oct - 22 Oct	Icelandair	direct
30 Oct - 11 Nov	Icelandair	direct
07 Oct - 12 Oct	Icelandair	direct
12 Oct - 16 Oct	Icelandair	direct
20 Oct - 26 Oct	Icelandair	direct
25 Oct - 01 Nov	Icelandair	direct

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

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 Toronto to Keflavik in October from 414€

Return flights