Grant County International Airport is a public use airport located 6mi northwest of the central business district of Moses Lake, a city in Grant County, Washington, United States. The airport is owned by the Port of Moses Lake. Its 13500ft runway is one of the longest in the world.As per Federal Aviation Administration records, the airport had 1,369 passenger boardings (enplanements) in calendar year 2008, 2,920 enplanements in 2009, and 1,442 in 2010. It is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a general aviation airport.HistoryOpened as a training airfield during World War II, the facility was operated by the U.S. Air Force as Larson Air Force Base until 1966. Passenger air service to and from Moses Lake ended on June 8, 2010.OverviewWith 4,650 acres and a main runway in length, it is one of the largest airports in the United States. Moses Lake is famous for good flying weather, as it is located on the east side of the Cascade Range, in the semi-arid desert of central Washington state.Grant County International Airport was an alternate landing site for the NASA Space Shuttle.