AirHint found the following cheapest return flights from Keflavik (KEF) to Madrid (MAD) in November 2025 (see full year).

Return flights

28 Nov - 01 Dec	Wizz Air Malta
11 Nov - 21 Nov	easyJet
25 Nov - 28 Nov	Wizz Air
21 Nov - 24 Nov	easyJet
21 Nov - 23 Nov	easyJet
16 Nov - 21 Nov	easyJet
24 Nov - 28 Nov	Wizz Air
24 Nov - 01 Dec	Wizz Air
14 Nov - 24 Nov	easyJet
17 Nov - 23 Nov	easyJet
17 Nov - 22 Nov	Wizz Air Malta
14 Nov - 21 Nov	Lufthansa
23 Nov - 04 Dec	Wizz Air
28 Nov - 01 Dec	Fly Play	direct
24 Nov - 01 Dec	Fly Play	direct

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

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 Keflavik to Madrid in November from 137€

Return flights