- Shonai Airport, also known as Shonai Kita Airport, is a domestic airport located in Sakata, Yamagata Prefecture, Japan. It serves as a hub for regional flights in the Tohoku region, connecting Yamagata Prefecture and surrounding areas with Tokyo and other major cities in Japan. The airport offers flights to destinations such as Tokyo Haneda Airport, Osaka Itami Airport, Sapporo New Chitose Airport, and Fukuoka Airport. Shonai Airport is a relatively small airport with limited facilities, but it provides convenient transportation options for travelers in the region.