- Challis Airport is a public-use airport located one nautical mile (2 km) west of the central business district of Challis, a city in Custer County, Idaho, United States. It is owned by the city of Challis and serves as a hub for general aviation in the region. The airport has a single asphalt runway and offers various services and amenities for pilots and passengers, including fueling, aircraft parking, and a terminal building. It plays a crucial role in connecting Challis and the surrounding area to regional and national air transportation networks.