Cheapest return flights from Ottawa to Keflavik in September from $566

AirHint found the following cheapest return flights from Ottawa (YOW) to Keflavik (KEF) in September 2025 (see full year).

Return flights

03 Sep - 17 Sep Air Canada
29 Sep - 25 Oct WestJet
02 Sep - 16 Sep Porter Airlines (Canada) Ltd
10 Sep - 17 Sep Air Canada
17 Sep - 05 Oct WestJet
19 Sep - 11 Oct Air Canada
09 Sep - 30 Sep WestJet
10 Sep - 01 Oct Porter Airlines (Canada) Ltd
25 Sep - 30 Sep WestJet

Also check the deals for one-way flights from Ottawa to Keflavik in September.

Skyscanner

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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