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

Return flights

22 Apr - 29 Apr	easyJet
15 Apr - 22 Apr	easyJet
22 Apr - 26 Apr	easyJet
29 Apr - 12 May	Iberia Express
29 Apr - 03 May	Iberia Express
16 Apr - 20 Apr	Iberia
29 Apr - 07 May	Iberia Express
06 Apr - 22 Apr	Wizz Air Malta
25 Apr - 03 May	Wizz Air UK
06 Apr - 13 Apr	Wizz Air Malta
23 Apr - 26 Apr	Wizz Air Malta
19 Apr - 26 Apr	Wizz Air UK
19 Apr - 24 Apr	Wizz Air UK
29 Apr - 09 May	Iberia Express
26 Apr - 29 Apr	easyJet
29 Apr - 05 May	Iberia Express
27 Apr - 03 May	Iberia
25 Apr - 02 May	Wizz Air UK
26 Apr - 03 May	Iberia
17 Apr - 02 May	Iberia Express

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 167€

Return flights