Kostanay International Airport (IATA: KSN, ICAO: UAUU) serves the city of Kostanay in northern Kazakhstan, acting as the primary air gateway for the Kostanay Region. It handles both domestic and a limited number of international flights, supporting the region's agricultural and industrial economy. The airport operates scheduled services to major Kazakhstani cities including Almaty and Nur-Sultan (Astana), as well as some international destinations. It plays an important role in connecting this relatively remote northern region to the rest of Kazakhstan and beyond. The facility is a relatively modest-sized airport by international standards, with infrastructure reflective of regional demand. Upgrades and modernization efforts have been undertaken over the years to improve capacity and passenger experience.