Newark Liberty International Airport — Newark, United States

Newark Liberty International Airport, coded EWR, opened in 1928 as one of the earliest major commercial airports in the United States, predating both of New York City's other principal airports. Today it operates as a significant United Airlines hub, handling substantial transatlantic traffic alongside domestic connections throughout the northeastern corridor. Its AirTrain monorail system links terminals to New Jersey Transit and Amtrak rail service, giving travelers a direct rail route into Manhattan without relying solely on taxis or buses. Positioned across the Hudson River in New Jersey, EWR often serves as a somewhat less congested alternative to JFK for business travelers heading into lower and midtown Manhattan. The airport has weathered repeated waves of terminal renovation, including a major new terminal project completed in the 2020s aimed at easing decades of capacity strain.