Cheapest return flights from Ontario to Keflavik in September from 779€

AirHint found the following cheapest return flights from Ontario (ONT) to Keflavik (KEF) in September 2026 (see full year).

Return flights

06 Sep - 13 Sep Alaska Airlines
02 Sep - 09 Sep Alaska Airlines
03 Sep - 10 Sep Alaska Airlines
01 Sep - 08 Sep Alaska Airlines
14 Sep - 21 Sep British Airways
14 Sep - 25 Sep British Airways
04 Sep - 11 Sep Alaska Airlines
05 Sep - 12 Sep Alaska Airlines

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

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