Iceland handles international and domestic aviation through a split system: almost all flights from abroad land at Keflavík, while domestic connections depart from a separate airport inside Reykjavík. The two are 50 kilometres apart, and the transfer between them falls on the traveler.

The Busiest Airports in Iceland
Keflavík International Airport is by far the country's largest, followed by Reykjavík Airport as the domestic hub. Akureyri in the north and Egilsstaðir in the east are the most significant regional airports, serving areas of the country that road travel makes slow to reach.

Keflavík International Airport (KEF)
KEF sits on the Reykjanes Peninsula, southwest of the capital. It is Iceland's sole gateway for international scheduled flights. Icelandair, the country's national carrier, operates the largest share of routes out of Keflavík, flying to destinations across Europe and North America. The airline has shaped Iceland's position as a transatlantic stopover point for decades and remains central to how most visitors arrive. Around 27 airlines in total operate at KEF. A major terminal expansion is underway, with an enlarged arrivals hall already open and further phases continuing in stages.

Reykjavík Airport (RKV)
RKV is three kilometres far from the city centre, handles domestic routes to Akureyri, Egilsstaðir, Ísafjörður, and smaller communities across the island. International arrivals connecting onward domestically must transfer overland from Keflavík before boarding here.

Akureyri Airport (AEY)
AEY is the main entry point for northern Iceland, with several daily connections to Reykjavík. Egilsstaðir Airport (EGS) serves the east of the country, where the alternative is a full day's drive. Smaller airfields at Ísafjörður, Vestmannaeyjar, Höfn, and elsewhere maintain links to communities that depend on air access through winter months.

Future Plans
Isavia, the state operator, is continuing the Keflavík expansion alongside sustainability commitments across the network, targeting measurable emissions reductions and working toward carbon-neutral operations by 2040.

In Magelline's view, the split between Keflavík and Reykjavík airports is the single most important practical detail for anyone planning a trip that goes beyond the capital. Keflavík handles the world; Reykjavík handles Iceland. Knowing the difference before you book saves a missed connection. In upcoming articles, Magelline will cover each airport individually with terminal details, transfer guidance, and what to expect on arrival.