Cheapest one-way flights from Ontario to Keflavik in June from 424€

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

One-Way flights

07 Jun Frontier Airlines
01 Jun Southwest Airlines
10 Jun Southwest Airlines
15 Jun Southwest Airlines
14 Jun Southwest Airlines
09 Jun Southwest Airlines
12 Jun Southwest Airlines
26 Jun Southwest Airlines
19 Jun Southwest Airlines

Also check the deals for return flights from Ontario to Keflavik in June.

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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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