AirHint found the following cheapest return flights from Keflavik (KEF) to Madrid (MAD) in August 2026 (see full year).
Return flights
| 02 Aug - 29 Aug | easyJet | ||
| 08 Aug - 12 Aug | SWISS | ||
| 02 Aug - 08 Aug | SWISS | ||
| 03 Aug - 09 Aug | SWISS | ||
| 02 Aug - 08 Aug | Iberia Express | direct | |
| 02 Aug - 29 Aug | Iberia | direct |
Also check the deals for one-way flights from Keflavik to Madrid in August.
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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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