Hilton Head Airport (IATA: HHH, ICAO: KHXD, FAA LID: HXD) is on Hilton Head Island, in Beaufort County, South Carolina, United States. Also known as Hilton Head Island Airport, it is owned by Beaufort County. In the spring of 2019, United Airlines began seasonal service to its hubs at Chicago-O’Hare, Newark, and Washington-Dulles, and American Airlines added seasonal service to its Washington-National hub to its existing service to Charlotte. Growth continued in May 2019, when Delta Air Lines resumed year-round service to its hub in Atlanta, as well as adding a new seasonal route to New York-LaGuardia. All of these flights are operated by regional affiliates. One public charter airline operates limited service. It is the only airport on Hilton Head Island. The National Plan of Integrated Airport Systems for 2017–2021 categorized it as a primary commercial service airport. USDOT records say the airport had 56,330 passengers in calendar year 2017. Many U.S. airports use the same three-letter location identifier for the FAA and IATA, but this airport is HXD to the FAA and HHH to the IATA. The IATA code HHH is used for airline booking.