When Should I Leave for Long Island MacArthur Airport?
Real-time calculator for Islip, NY (ISP) — live traffic, TSA waits, all transport modes.
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Frequently Asked Questions — ISP
How early should I arrive at ISP?⌄
Long Island MacArthur Airport is a smaller airport, so check-in and security typically move quickly. Arriving 45–60 minutes before domestic departure is usually sufficient, though we recommend 90 minutes if you are checking bags or travelling with a group. Always confirm with your airline.
What should I know about flying out of ISP?⌄
Long Island MacArthur Airport serves Islip with scheduled service. Parking is generally easy and inexpensive compared to major hub airports. Ground transport options may be more limited — plan your journey to the airport in advance using the WhenToLeave calculator above.
About ISP — Long Island MacArthur Airport
Long Island MacArthur Airport serves the Islip area of NY as a regional gateway, offering a more relaxed travel experience than major airports.
Flying through ISP means shorter walks to the gate — most passengers are airside within minutes of arriving at the terminal.
Islip is located in NY, and ISP sits at coordinates 40.80°N, 73.10°W.
Plan for an average 5-minute walk from security to your gate at ISP. Gates at the far end of concourses may add extra time — always check your boarding pass early.
TSA wait times at ISP are estimated using historical patterns for your day of week and time of travel. Early morning and mid-day flights typically see the shortest security lines.
ISP offers scheduled commercial service, connecting Islip to destinations across the US.