Building a small regional or "greenfield" airport typically takes 3 to 5 years from the start of construction to the first flight, but the entire process often spans 10 years or more when planning is included. The timeline is divided into three major phases: Planning and Site Selection (1-3 years), which involves environmental impact studies and land acquisition; Permitting and Design (2-4 years), which requires navigating complex government regulations and securing funding; and finally, Construction (2-4 years). For a small airport, the construction phase focuses on a single runway, a basic terminal building, an air traffic control tower, and fuel storage. Delays are common due to weather, local community opposition, or environmental concerns. In 2026, new sustainable "eco-airports" might take slightly longer due to the integration of advanced green technologies like on-site solar farms and electric charging infrastructure for regional aircraft.