Cheapest return flights from Madrid to Keflavik in August from $264

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 - 05 Sep Iberia Express
26 Aug - 07 Sep Iberia Express
31 Aug - 17 Sep Iberia
26 Aug - 01 Sep Iberia Express
26 Aug - 13 Sep Iberia Express
31 Aug - 28 Sep Iberia
26 Aug - 02 Sep Iberia Express
31 Aug - 10 Sep Iberia
26 Aug - 06 Sep Iberia Express
29 Aug - 10 Sep Ryanair
20 Aug - 26 Aug Ryanair
20 Aug - 27 Aug Ryanair
20 Aug - 24 Aug Ryanair
13 Aug - 19 Aug Ryanair
26 Aug - 29 Aug Iberia Express
06 Aug - 13 Aug easyJet
12 Aug - 27 Aug Ryanair
20 Aug - 28 Aug Ryanair
22 Aug - 27 Aug Ryanair
22 Aug - 29 Aug easyJet

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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