AirHint found the following cheapest one-way flights from Keflavik (KEF) to Calgary (YYC) in September 2025 (see full year).

One-Way flights

11 Sep	WestJet	direct
18 Sep	WestJet	direct
08 Sep	WestJet	direct
13 Sep	WestJet	direct
20 Sep	WestJet	direct
29 Sep	WestJet	direct
16 Sep	WestJet	direct
25 Sep	WestJet	direct
22 Sep	WestJet	direct
30 Sep	WestJet	direct

Also check the deals for return flights from Keflavik to Calgary in September.

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 one-way flights from Keflavik to Calgary in September from $163

One-Way flights