The cheapest round-trip from Madrid to Reykjavik is about 203 EUR, usually in January 2027; October 2026 is priciest, so booking the low month saves around 156 EUR (~44%). Typical fare ~324 EUR, from 242 priced fares. Flightmussy live data, updated 2026-06-05.
Cheap flights from Madrid (MAD) to Reykjavik (KEF). Free, no signup, no ads, no tracking. Compare every airline across 12 months of fares on one heatmap — including low-cost carriers Google Flights often deprioritises.
Cheapest round-trip seen: 203 EUR, usually around January 2027. Typical fare ~324 EUR. Across the year prices range roughly 203–359 EUR — about 44% cheaper in the low season than the peak (October 2026). Carriers on this route include KLM, Icelandair, Finnair, Scandinavian Airlines.
Based on Flightmussy's live 12-month fare data; prices last updated 2026-06-05. Prices change constantly — search live for current fares.
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