Ireland West Airport Knock — Charlestown, Ireland

Perched on a windswept plateau in County Mayo, Ireland West Airport Knock owes its existence largely to one determined parish priest, Monsignor James Horan, who championed the project through the 1970s despite skepticism from officials about building a regional airport in such a remote part of Ireland. It opened in 1986, initially known informally as Horan International, built chiefly to ferry Catholic pilgrims to the nearby Marian shrine at Knock, site of a reported apparition in 1879 that still draws visitors worldwide. Assigned the code NOC, the airport expanded beyond pilgrimage traffic into a genuine regional gateway, with low-cost carriers linking County Mayo and the west of Ireland to Britain and continental Europe. Its single runway and modest terminal reflect a facility built for a rural catchment rather than a national capital, yet it remains vital to tourism and connectivity across this historically isolated corner of the country.