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

Return flights

11 Jan - 15 Jan	easyJet
18 Jan - 22 Jan	easyJet
25 Jan - 29 Jan	easyJet
30 Jan - 06 Feb	easyJet
21 Jan - 29 Jan	easyJet
30 Jan - 04 Feb	easyJet
18 Jan - 20 Jan	easyJet
21 Jan - 27 Jan	easyJet
16 Jan - 23 Jan	Wizz Air Malta
26 Jan - 30 Jan	Wizz Air Malta
11 Jan - 18 Jan	easyJet
15 Jan - 29 Jan	easyJet
30 Jan - 07 Feb	easyJet
30 Jan - 08 Feb	easyJet
28 Jan - 04 Feb	Air Europa
30 Jan - 05 Feb	easyJet
26 Jan - 05 Feb	easyJet
30 Jan - 01 Feb	easyJet
24 Jan - 02 Feb	Air Europa
31 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 126€

Return flights