Multiple factors make airspace dangerous across various states in the United States. Terrain, including mountains, congested airspaces, and other elements contribute to this complexity. While conflict zones are a concern globally, they are not currently a significant issue in the U.S. However, Honeywell, an aerospace company with a presence in many aircraft, has identified several challenging airports.
Honeywell's list of demanding airports addresses those with difficult approaches or terrains. Aspen-Pitkin County Airport in Colorado features a steep approach path that requires special navigation aids for missed approaches. Laughlin/Bullhead International Airport in Arizona is noted for its rapidly rising terrain. Montana's Bert Mooney Airport is surrounded by mountains and lacks a control tower.
"Our aerospace innovations bring people together, make the world safer and more secure, and help humankind reach for the stars. Now we’re shaping aviation’s future with sustainable aviation fuels, smarter cockpits, ultra-efficient engines, smart airports, flying taxis, and much more." - Honeywell