Jacksonville International Airport — Jacksonville, United States

Jacksonville International Airport, coded JAX, sits north of downtown along the St. Johns River corridor in northeast Florida. It opened at this location in 1968, replacing the older Imeson Airport, and is owned by the Jacksonville Aviation Authority. A major terminal renovation added a connecting atrium between concourses, modernizing the passenger experience. JAX serves as a JetBlue focus city and carries meaningful cargo volume tied to the region's logistics and shipping base, complementing the nearby Port of Jacksonville. The surrounding metro area has deep military aviation roots, home to Naval Air Station Jacksonville and Naval Station Mayport, though neither installation shares JAX's civilian runways. Steady population growth across northeast Florida and spillover tourism from area beaches have supported rising passenger numbers in recent years.