AirHint found the following cheapest return flights from Ontario (ONT) to Keflavik (KEF) in July 2026 (see full year).
Return flights
| 31 Jul - 07 Aug | Alaska Airlines | ||
| 29 Jul - 11 Aug | Alaska Airlines | ||
| 15 Jul - 26 Jul | Alaska Airlines | ||
| 22 Jul - 01 Aug | Southwest Airlines | ||
| 30 Jul - 10 Aug | Alaska Airlines |
Also check the deals for one-way flights from Ontario to Keflavik in July.
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