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

Return flights

20 Jan - 26 Jan	Ryanair
27 Jan - 04 Feb	Ryanair
19 Jan - 23 Jan	Ryanair
21 Jan - 23 Jan	Ryanair
26 Jan - 02 Feb	Ryanair
17 Jan - 23 Jan	Ryanair
17 Jan - 26 Jan	Ryanair
19 Jan - 21 Jan	Ryanair
21 Jan - 26 Jan	Ryanair
27 Jan - 03 Feb	Ryanair
21 Jan - 24 Jan	Ryanair
26 Jan - 31 Jan	Ryanair
20 Jan - 21 Jan	Ryanair
28 Jan - 07 Feb	Iberia Express
31 Jan - 09 Feb	Iberia
26 Jan - 01 Feb	Air Europa
28 Jan - 05 Feb	Ryanair
30 Jan - 03 Feb	Ryanair
29 Jan - 07 Feb	Ryanair
31 Jan - 12 Feb	Ryanair

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

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 January from 195€

Return flights