Icelandair is bringing Madrid back onto its summer map. In a network update published on its group newsroom, the airline said flights between Reykjavík Keflavík and the Spanish capital will run from 9 April through 25 October 2027, restoring a destination last served until October 2024.
Two weekly, then three
According to Icelandair, Madrid will operate two to three times a week on Mondays, Wednesdays and Fridays across the summer season. AeroRoutes schedule filing summary is more granular: service starts on 9 April 2027 with two weekly Boeing 737 MAX 8 flights, then steps up to three weekly from 19 May 2027. Flight numbers in the AeroRoutes filing are FI996 from Keflavík and FI997 from Madrid, with a block time of about four hours and twenty minutes each way.
That pattern puts Madrid among Icelandair classic European leisure and city-break spokes that connect through Keflavík rather than relying on a long-haul widebody. The 737 MAX 8 is the workhorse for those medium-haul European legs, and it matches the type Icelandair is also putting on its new St. Louis service in the same summer season. For schedule planners, a mid-May frequency step-up is a familiar Icelandair move: start thin in the shoulder, then thicken once the peak leisure bank is firm.
Part of a two-city summer add
Madrid was announced together with St. Louis, Icelandair newest US Midwest gateway. The group statement from chief commercial officer Tómas Ingason framed both cities as summer 2027 network growth ahead of the airline 90th anniversary in June. St. Louis gets three to four weekly flights from mid-May; Madrid returns as a European resume rather than a brand-new market.
For Spanish travellers, the value of the Keflavík stop is the one-stop map beyond Iceland: Icelandair North Atlantic network and partner connections into North America. For Iceland-based and connecting passengers, Madrid adds a large southern European capital with year-round inbound tourism demand, museum traffic and strong summer outbound flying to the Atlantic islands and beyond.
Ingason statement also tied St. Louis to a deeper commercial partnership with Southwest Airlines at that Midwest hub. Madrid does not need that US partner story; it stands on its own as a resume of a known European city pair that Icelandair already understands from prior seasons.
Why the resume matters
Dropping Madrid after the 2024 season left a gap on a city pair that combines leisure, visiting-friends-and-relatives and some corporate demand. Bringing it back for a full April to October bank, rather than a short peak-July experiment, suggests Icelandair sees enough shoulder-season traffic to justify the aircraft for more than the high summer peak.
Spain remains one of the densest short- and medium-haul leisure markets in Europe. A three-weekly MAX 8 from Keflavík will not move Madrid overall seat share, but it does restore a one-stop Atlantic product that Spanish and Icelandic travel agents can sell without forcing a detour through London, Amsterdam or another mega-hub.
As with all early summer filings, frequencies can still be adjusted before tickets go on sale in volume. The airline own statement and the AeroRoutes filing agree on the core facts: Madrid returns in northern summer 2027 on the 737 MAX 8, starting in April and running into late October, with a mid-May uplift from two to three weekly flights.
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