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

Return flights

07 Oct - 12 Oct	WestJet	direct
04 Oct - 08 Oct	WestJet	direct
04 Oct - 12 Oct	WestJet	direct
04 Oct - 13 Oct	WestJet	direct
06 Oct - 13 Oct	WestJet	direct
11 Oct - 13 Oct	WestJet	direct
11 Oct - 21 Oct	WestJet
11 Oct - 31 Oct	WestJet
11 Oct - 26 Oct	WestJet
11 Oct - 14 Oct	WestJet

Also check the deals for one-way flights from Keflavik to Calgary 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 Keflavik to Calgary in October from $316

Return flights