Hilo International Airport, formerly General Lyman Field, is owned and operated by the Hawaii state Department of Transportation. Located in Hilo, Hawaii County, the airport encompasses and is one of two major airports on Hawaii Island and one of five major airports in the state. Hilo International Airport serves most of East Hawaii, including the districts of Hilo and Puna, as well as portions of the districts of Hāmākua and Kaū. Most flights to the airport are from Honolulu International Airport. These flights are predominantly operated by Hawaiian Airlines and Aloha Air Cargo.It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a small-hub primary commercial service facility.HistoryInitial developmentIn 1927 the Territory of Hawaii legislature passed Act 257, authorizing the expenditure of $25,000 for the construction of a landing strip in Hilo. The site was known as Keaukaha, on land belonging to the Hawaiian Homes Commission. Inmates from a nearby prison camp cleared the area of brush and rocks. The new facility was dedicated on February 11, 1928, by Major Clarence M. Young, then Secretary of Aeronautics of the U.S. Department of Commerce.