Cardiff International Airport — Cardiff, United Kingdom

Wales' busiest airport, CWL, operates from Rhoose in the Vale of Glamorgan, a coastal spot roughly a dozen miles southwest of central Cardiff rather than within the capital itself. British Airways once maintained aircraft, including Concorde, at a large maintenance base here during the supersonic jet's operational decades, a distinctive chapter for what otherwise functions as a fairly typical regional European airport today. Ownership passed to the Welsh Government in 2013 after a period of decline, part of a broader push to stabilize air links for Wales as a whole rather than leaving the market solely to English airports like Bristol. Low-cost and leisure carriers dominate the current route map, with charter holiday flights to Mediterranean destinations sitting alongside scheduled services to European cities and a smaller number of domestic connections, while cargo and aircraft maintenance activity add further depth to CWL's role in the regional economy.