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

Return flights

04 Mar - 09 Mar	easyJet
03 Mar - 10 Mar	easyJet
03 Mar - 09 Mar	easyJet
02 Mar - 09 Mar	easyJet
20 Mar - 29 Mar	Iberia
23 Mar - 29 Mar	Iberia Express
21 Mar - 29 Mar	Iberia
02 Mar - 06 Mar	Fly Play	direct
23 Mar - 27 Mar	Fly Play	direct
05 Mar - 12 Mar	Iberia Express
30 Mar - 10 Apr	Fly Play	direct
09 Mar - 06 Apr	Fly Play	direct
10 Mar - 07 Apr	easyJet
28 Mar - 06 Apr	Ryanair
31 Mar - 07 Apr	easyJet
23 Mar - 02 Apr	Iberia Express
28 Mar - 02 Apr	Ryanair
27 Mar - 02 Apr	Iberia
30 Mar - 02 Apr	Iberia Express
28 Mar - 05 Apr	Iberia

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

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 March from 163€

Return flights