Cheapest return flights from Ontario to Keflavik in June from 1,071€

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

Return flights

01 Jun - 10 Jun Southwest Airlines
02 Jun - 16 Jun Southwest Airlines
08 Jun - 13 Jun Southwest Airlines
06 Jun - 16 Jun Southwest Airlines
01 Jun - 16 Jun Southwest Airlines
03 Jun - 16 Jun Southwest Airlines
08 Jun - 12 Jun Southwest Airlines
08 Jun - 14 Jun Southwest Airlines
08 Jun - 16 Jun Southwest Airlines
14 Jun - 18 Jun Southwest Airlines

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

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