Republic Airport has a two-story terminal building serving passengers boarding charter flights to nearby cities such as Atlantic City, New Jersey. Three fixed based operators serve corporate and light general aviation customers: SheltAir, Republic Jet Center, and Atlantic Aviation. Next to the airport was the 56th Fighter Group restaurant, which closed in August 2012. Also, Troop L of the New York State Police, which covers Nassau and Suffolk Counties, is headquartered at the airport.
The airport covers 526 acres (213 ha) at an elevation of 80 feet (24 m). It has two asphalt runways: 14/32 is 6,833 by 150 feet (2,083 x 46 m) and 1/19 is 5,516 by 150 feet (1,681 x 46 m). In 2011 the airport had 188,642 aircraft operations, average 516 per day: 95% general aviation, 5% air taxi, <1% military, and <1% airline. 508 aircraft were then based at this airport: 72% single-engine, 15% multi-engine, 9% jet, and 5% helicopter.