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

Return flights

21 Apr - 26 Apr	Wizz Air Malta
20 Apr - 26 Apr	Iberia Express
17 Apr - 23 Apr	Wizz Air Malta
21 Apr - 03 May	Ryanair
15 Apr - 26 Apr	Iberia Express
22 Apr - 26 Apr	Iberia Express
15 Apr - 23 Apr	Iberia Express
16 Apr - 26 Apr	Air Europa
25 Apr - 03 May	Iberia Express
20 Apr - 03 May	Iberia
20 Apr - 24 Apr	Iberia Express
13 Apr - 26 Apr	Iberia
14 Apr - 24 Apr	Iberia Express
22 Apr - 03 May	Iberia Express
27 Apr - 03 May	Iberia
27 Apr - 06 May	Iberia
24 Apr - 03 May	Air Arabia Maroc
23 Apr - 03 May	Iberia
30 Apr - 10 May	Iberia
30 Apr - 07 May	Iberia

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

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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Cheapest return flights from Madrid to Keflavik in April from 184€

Return flights