Linden Airport is a mile southeast of downtown Linden, in Union County, New Jersey. Also known as Linden Municipal Airport, it is next to U.S. Route 1&9. The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a general aviation reliever airport.HistoryDuring World War II General Motors automobile factory across the street from the airport called Linden Assembly, produced military aircraft.When World War II started Grumman Aircraft Corporation contracted with the recently created Eastern Aircraft Corporation (a GM company) to take over the manufacture of the Wildcat and Avenger aircraft for the US Navy and its Allies. This would allow Grumman to focus on the development and production of Hellcat. The Wildcat was manufactured in Linden, NJ and towed across the street to the Linden Airport for test flying and delivery.