ISP delays today: Long Island MacArthur Airport has an on-time departure rate of about 77%. The FAA airport status for ISP typically shows an average delay of 68 minutes when departures are delayed. The most common reason for departure delays here is the incoming plane arriving late. Roughly 2.1% of flights are cancelled. The typical taxi-out time from gate to takeoff is about 14 minutes. The current TSA wait is about about 5 min. The fastest time through security is 4 AM (about 5 min). The busiest period is 3 PM (19-25 minutes).
Source: BTS, FAA. Updated March 2026.ISP Delays & Airport Status
Long Island MacArthur Airport — Islip
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FAA Airport Status — ISP
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TSA Wait Times — ISP Islip
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About 5 min
Fastest: 4 AM (about 5 min)|Busiest: 3 PM (19–25 minutes)
Wait times are similar throughout the week.
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Departures here are on time most of the time. About 77% of flights leave within 15 minutes of schedule.
The most common reason for departure delays here is the incoming plane arriving late.
Planes usually taxi out in a reasonable time. The typical wait from gate to takeoff is about 14 minutes.
Among major airlines, F9 has the most complaints (23.2/100k) while WN has the fewest (1.5/100k).
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ISP departure performance by month
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Airlines at ISP
On-time departure rate from DOT data
JetBlue Airways80%
Southwest Airlines79%
Frontier Airlines76%
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