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

Return flights

16 Jan - 21 Jan	Wizz Air Malta
26 Jan - 31 Jan	Wizz Air Malta
26 Jan - 30 Jan	Wizz Air Malta
13 Jan - 22 Jan	Iberia Express
13 Jan - 23 Jan	Iberia Express
16 Jan - 18 Jan	Wizz Air Malta
17 Jan - 23 Jan	Ryanair
29 Jan - 04 Feb	Wizz Air Malta
29 Jan - 02 Feb	Wizz Air Malta
21 Jan - 29 Jan	easyJet
20 Jan - 23 Jan	Iberia Express
28 Jan - 01 Feb	KLM
15 Jan - 18 Jan	Wizz Air Malta
27 Jan - 03 Feb	Air Europa
30 Jan - 02 Feb	Ryanair
26 Jan - 02 Feb	KLM
31 Jan - 06 Feb	Ryanair
31 Jan - 05 Feb	Ryanair
29 Jan - 05 Feb	Wizz Air Malta
30 Jan - 06 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 178€

Return flights