Zhukovsky International Airport — Moscow, Russia

Long before it carried scheduled passenger flights, the town of Zhukovsky southeast of Moscow was synonymous with Soviet and Russian aviation research, and that heritage still defines Zhukovsky International Airport, known today by the code ZIA. The airfield grew out of Ramenskoye, a test facility tied to the Gromov Flight Research Institute, where prototype aircraft have been evaluated for decades on one of the longest runways in the country. Every two years the surrounding grounds host the MAKS air show, drawing manufacturers, military delegations, and aviation enthusiasts to watch flight demonstrations above the same tarmac used for scheduled service. Commercial operations began only in 2016, positioning ZIA as an additional option alongside Moscow's older airports and intended in part to ease congestion at the capital's busier terminals. Its runway heritage, built for testing rather than routine turnarounds, gives the airport unusually generous length and a distinct identity among the capital's aviation gateways.