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

Return flights

31 Aug - 09 Sep	WestJet	direct
26 Aug - 09 Sep	WestJet	direct
11 Aug - 20 Aug	WestJet	direct
25 Aug - 29 Aug	WestJet	direct
23 Aug - 29 Aug	WestJet	direct
21 Aug - 29 Aug	WestJet	direct
20 Aug - 27 Aug	WestJet	direct
18 Aug - 25 Aug	WestJet	direct
14 Aug - 25 Aug	WestJet	direct
17 Aug - 22 Aug	WestJet	direct
01 Aug - 12 Aug	WestJet	direct
05 Aug - 10 Aug	WestJet	direct

Also check the deals for one-way flights from Calgary to Keflavik in August.

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 Calgary to Keflavik in August from $431

Return flights