Cheapest return flights from Madrid to Keflavik in August from $244

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 - 09 Sep Iberia Express
26 Aug - 07 Sep Iberia Express
26 Aug - 03 Sep Iberia Express
27 Aug - 10 Sep Fly Play direct
26 Aug - 01 Sep Iberia Express
29 Aug - 10 Sep Fly Play direct
26 Aug - 04 Sep Iberia Express
26 Aug - 30 Aug Iberia Express
24 Aug - 07 Sep Fly Play direct
26 Aug - 29 Aug Iberia Express
25 Aug - 27 Aug Iberia
23 Aug - 26 Aug Iberia Express
26 Aug - 28 Aug Iberia Express
24 Aug - 27 Aug Fly Play direct
18 Aug - 27 Aug Ryanair
29 Aug - 07 Sep easyJet
24 Aug - 08 Sep Ryanair
23 Aug - 27 Aug Iberia Express
22 Aug - 27 Aug Fly Play direct
19 Aug - 26 Aug Iberia

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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