Westchester County Airport is a county-owned airport in Westchester County, New York, three miles (6 km) northeast of downtown White Plains, with territory in the towns of North Castle and Harrison, New York, and village of Rye Brook, New York. It is sometimes referred to as the White Plains Airport and is so identified by the Official Airline Guide (OAG). The airport primarily serves Westchester County, New York, and Fairfield County, Connecticut; the New York–Connecticut state border runs along its eastern perimeter. Being approximately 33 miles (53 km) north of Midtown Manhattan, it is also considered a satellite or reliever airport for the New York metropolitan area. HPN is currently serviced by 5 airlines, including regional code-sharing affiliates with scheduled flights for their major airline partners, to 20 destinations throughout the United States. 3 scheduled charter airlines also offer flights and the New York Knicks and Rangers use the airport for charter flights during the season. The National Plan of Integrated Airport Systems for 2011–2015 categorized HPN as a primary commercial service airport. Per Federal Aviation Administration records, the airport had 904,482 passenger enplanements in calendar year 2008, 964,927 in 2009, and 999,831 in 2010. History Westchester County Airport was built during World War II in 1942 as a home to an Air National Guard unit to protect New York City and Rye Lake, part of the city's water supply system. In May 1983, with the growth of suburban Westchester, the Guard unit abandoned Westchester Air National Guard Base and moved to Stewart International Airport, in Orange County. The first scheduled airline flights were by American Airlines in late 1949 with a weekday morning flight from New York LaGuardia Airport to HPN continuing to Syracuse Hancock International Airport and beyond and returning in the evening. Mohawk Airlines replaced American in 1955; Mohawk and successor Allegheny Airlines served HPN until 1979. The first scheduled jet flight was a Mohawk BAC One-Eleven in 1965. Before the federal Airline Deregulation Act in 1978, the airport was served in 1976 by Allegheny Airlines BAC One-Elevens and by several commuter air carriers including Air Speed, Command Airways and Commuter Airlines. Air Florida arrived in 1980 and United Airlines during the mid-1980s. American Airlines also resumed mainline service. Regional carrier Independence Air ceased operations at HPN on January 5, 2006. Major airlines that previously served the airport include American Airlines, Northwest Airlines, Republic Airlines (1979-1986), United