Cheapest return flights from Madrid to Keflavik in August from 239€

AirHint found the following cheapest return flights from Madrid (MAD) to Keflavik (KEF) in August 2026 (see full year).

Return flights

27 Aug - 06 Sep Ryanair
29 Aug - 06 Sep Iberia
25 Aug - 29 Aug Iberia Express
29 Aug - 08 Sep Iberia
28 Aug - 04 Sep Iberia
26 Aug - 08 Sep Ryanair
27 Aug - 04 Sep Ryanair
31 Aug - 06 Sep Iberia
31 Aug - 08 Sep Iberia
28 Aug - 31 Aug Iberia
23 Aug - 31 Aug KLM
21 Aug - 29 Aug Ryanair
18 Aug - 29 Aug Iberia
24 Aug - 01 Sep Iberia
19 Aug - 29 Aug Ryanair
12 Aug - 19 Aug Ryanair
19 Aug - 31 Aug Ryanair
24 Aug - 29 Aug Iberia
26 Aug - 05 Sep Iberia
26 Aug - 30 Aug Iberia

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

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