AirHint found the following cheapest return flights from Ontario (ONT) to Keflavik (KEF) in April 2026 (see full year).
Return flights
| 06 Apr - 15 Apr | Alaska Airlines | ||
| 06 Apr - 14 Apr | Alaska Airlines | ||
| 05 Apr - 12 Apr | British Airways | ||
| 16 Apr - 23 Apr | British Airways | ||
| 02 Apr - 10 Apr | British Airways | ||
| 08 Apr - 16 Apr | Alaska Airlines |
Also check the deals for one-way flights from Ontario to Keflavik in April.
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