AirHint found the following cheapest return flights from Ljubljana (LJU) to Keflavik (KEF) in June 2026 (see full year).
Return flights
| 05 Jun - 19 Jun | Lufthansa | ||
| 20 Jun - 30 Jun | Air Serbia | ||
| 19 Jun - 28 Jun | SWISS |
Also check the deals for one-way flights from Ljubljana to Keflavik in June.
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