Citizens’ group requests noise countermeasures from Sapporo City and national government over extension of Okadama Airport runway.

Okadama Airport is a regional airport located in Sapporo, Japan, which originally opened in 1931 as a military airfield. After World War II, it was converted for civilian use and served as Hokkaido’s primary commercial airport until the opening of New Chitose Airport in 1988. Today, it primarily handles smaller commuter flights and general aviation.

Okadama Garrison is a Japan Ground Self-Defense Force (JGSDF) base located in Sapporo, Hokkaido. It was originally established as an Imperial Japanese Army airfield in the 1930s and was later used by the United States Air Force during the post-World War II occupation before being transferred to the JSDF. Today, it primarily serves as a key logistical and training hub for northern Japan’s defense forces.

Sapporo Okadama Airport is a regional airport located in the northern part of Sapporo, Japan. It opened in 1961 primarily for domestic flights and general aviation, serving as Hokkaido’s main airport before the opening of New Chitose Airport in 1988. Today, it functions mainly for short-distance commuter flights, air taxi services, and flight training.

Sapporo is the capital of Hokkaido, Japan, founded in 1868 as a planned modern city during the Meiji era’s development of the northern frontier. It is now internationally famous for its annual Sapporo Snow Festival, its beer brewing heritage (home of Sapporo Beer, founded in 1876), and for having hosted the 1972 Winter Olympics. The city’s orderly grid layout and landmarks like the Clock Tower reflect its deliberate Western-inspired planning.

The Ministry of Land, Infrastructure, Transport and Tourism (MLIT) is a key Japanese government agency established in 2001 through a merger of several ministries. It is responsible for national policy and development related to public works, transportation networks, land use, and tourism. Its history reflects Japan’s post-war focus on infrastructure growth and modern administrative consolidation.