Long Island Mac Arthur Airport (ISP) in Ronkonkoma/Islip serves Suffolk County as a compact regional airport with a single terminal handling commercial and general aviation. American Airlines is the primary carrier offering scheduled service to major hubs such as Charlotte and Philadelphia, while seasonal and charter flights connect to leisure destinations. Travelers will find essential passenger services, car rentals, parking and ground transportation close to the terminal; check the online flight board for real-time arrivals and departures before you travel.
Frequently asked questions
The IATA airport code for Long Island Mac Arthur Airport is ISP.
The ICAO code for Long Island Mac Arthur Airport is KISP.
Long Island Mac Arthur Airport (ISP) is located in Islip, United States.
The local time zone at Long Island Mac Arthur Airport (ISP) is America/New_York (GMT-4).
About 16 scheduled departures were counted at Long Island Mac Arthur Airport (ISP) when flight schedules were last measured on July 19, 2026.
For international flights, arrive at least 3 hours before departure; for domestic flights, about 2 hours.
Based on the current departures board at Long Island Mac Arthur Airport (ISP), scheduled flights are operated by Southwest Airlines, Cape Air, Jetblue Airways, Breeze Airways, and Frontier Airlines.
Destinations on the current departures board at Long Island Mac Arthur Airport (ISP) include Boston, Orlando, Baltimore, West Palm Beach, Philadelphia, and Bedford.
The board on this page shows arrivals and departures for Long Island Mac Arthur Airport (ISP). It re-checks for updates while the page is open, and every board states how old its data is — busy hubs are refreshed within hours, quieter airports less often.