ISP TSA Wait Times — Islip
Long Island MacArthur Airport, Islip. Live security wait times, updated every 10 minutes.
GateWaitTimes independently measures security waits at ISP, taking a reading every ten minutes around the clock. We have recorded 10,708 readings here since August 25, 2026, drawn from official TSA, airport, and FAA feeds.
Learn more about our data credibility & sources →ISP TSA Wait Times by Hour
This chart shows the average security wait at ISP for every hour of the day, so a taller bar means the line is usually longer at that time. The numbers come from our own readings, which we take every ten minutes around the clock.
The current wait time at ISP is 15 minutes, which is busier than usual for a Wednesday, when the line usually runs around 6 minutes.
When Should You Leave?
Tap to pick your flight’s departure time
TSA PreCheck at ISP
PreCheck lane open right now
The TSA PreCheck lane at Islip is usually the quickest way through security. Travelers keep shoes and belts on and leave laptops packed, so it moves faster than the standard lane. At a mid-size airport, PreCheck is typically concentrated at one or two checkpoints and may close during quieter stretches of the day.
The status above comes from the same feed as the wait time on this page. GateWaitTimes polls it every 10 minutes, around the clock. If the lane shows closed, standard screening is still open; recheck shortly before you leave in case staffing changes.
How Early Should You Arrive at ISP?
These are general guidelines for Long Island MacArthur Airport. Use the calculator above for a departure time tuned to the current wait, your drive, and whether you have PreCheck. Add time on peak travel mornings, around holidays, and if you're checking a bag.
Frequently Asked Questions
How long is the security line at Islip (ISP) right now?
As of the latest measurement, the standard security wait at ISP is about 15 minutes. GateWaitTimes re-measures every 10 minutes, so check the live figure at the top of this page.
How early should I arrive at Long Island MacArthur Airport?
For a mid-size airport, arriving about 90 minutes before a domestic flight and 2.5 hours before an international flight is usually comfortable outside holiday peaks.
Does ISP have TSA PreCheck?
Most US airports of this size offer TSA PreCheck lanes at their main checkpoints, though lane hours vary by checkpoint and time of day. Check the checkpoint status on this page for which lanes are reporting, and the TSA site for official PreCheck lane hours.
How often is this wait-time data updated?
GateWaitTimes polls TSA wait-time feeds, FAA airport status, and National Weather Service forecasts every 10 minutes, around the clock, and records every reading.
Is TSA PreCheck open at ISP right now?
Yes — as of the latest reading, a TSA PreCheck lane is open at ISP. GateWaitTimes re-checks every 10 minutes.
About Security at Long Island MacArthur Airport
Long Island MacArthur Airport (ISP) serves Islip, NY. It is a mid-sized airport where lines build around banks of departures rather than staying long all day, which shapes how the security line at Islip behaves: expect the longest waits when several departures cluster in the same hour, and much shorter ones in between.
TSA PreCheck status at ISP is tracked live. The PreCheck section above shows whether a lane is open right now. PreCheck lanes usually move faster than standard screening, but they are not staffed at every hour, so check before counting on one.
The number above is a live reading for the standard lane, refreshed every few minutes. Security wait times can change quickly at ISP, so recheck this page shortly before you leave for the airport.