Cheapest return flights from Madrid to Keflavik in August from $275

Best time to book flights for Madrid (MAD) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Madrid (MAD) to Keflavik (KEF) in August 2025 (see full year).

Return flights

26 Aug - 10 Sep Iberia Express
29 Aug - 03 Sep easyJet
26 Aug - 01 Sep Iberia Express
28 Aug - 01 Sep Scandinavian Airlines
29 Aug - 08 Sep easyJet
25 Aug - 28 Aug Iberia
25 Aug - 01 Sep Iberia
31 Aug - 09 Sep easyJet
31 Aug - 05 Sep Iberia
28 Aug - 14 Sep Ryanair
31 Aug - 03 Sep Scandinavian Airlines
25 Aug - 31 Aug Iberia
22 Aug - 26 Aug Ryanair
20 Aug - 28 Aug Iberia Express
16 Aug - 26 Aug Ryanair
14 Aug - 26 Aug Ryanair
06 Aug - 13 Aug easyJet
26 Aug - 30 Aug Iberia Express
19 Aug - 28 Aug Ryanair
15 Aug - 26 Aug Ryanair

Also check the deals for one-way flights from Madrid to Keflavik in August.

Skyscanner

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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