AirHint found the following cheapest one-way flights from Madrid (MAD) to Keflavik (KEF) in May 2026 (see full year).
One-Way flights
| 12 May | Wizz Air UK | ||
| 02 May | Wizz Air UK | ||
| 18 May | Ryanair | ||
| 19 May | Wizz Air UK | ||
| 31 May | Scandinavian Airlines | ||
| 16 May | Ryanair | ||
| 15 May | Wizz Air UK |
Also check the deals for return flights from Madrid to Keflavik in May.
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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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