Pirineus - la Seu d'Urgell Airport (IATA: LEU, ICAO: LESU) is a small regional airport located near La Seu d'Urgell in the Catalonia region of Spain, close to the border with Andorra. It sits at an elevation of approximately 2,625 feet (800 meters) above sea level amid the Pyrenean mountains, which presents notable challenges for aircraft operations. The airport primarily serves general aviation, private flights, and occasional charter services rather than regular scheduled commercial routes. Its proximity to Andorra—one of Europe's smallest countries, which has no airport of its own—makes it a strategically important facility for accessing the principality. Due to its mountainous setting and limited infrastructure, the airport has a short runway and restricted operational capacity. It has long been discussed as a potential commercial gateway for Andorra, though scheduled airline service has remained very limited or absent for extended periods.