Eday Airport — Eday, United Kingdom

EOI is the code for Eday Airport, a small airstrip on Eday, one of the Orkney Islands off the northern coast of Scotland. The airport is a vital link in Loganair's Orkney inter-island network, which operates some of the shortest scheduled commercial flights in the world between neighboring islands. EOI connects Eday's small population to Kirkwall, the Orkney hub, supporting essential travel for residents, medical needs, and limited tourism. Flights typically use small propeller aircraft suited to the short grass or gravel runways common across the Orkney island airstrips. Weather-dependent operations and reliance on lifeline air service make EOI a distinctive example of remote, community-focused aviation infrastructure in the United Kingdom.