DiscoverAirports

Long Island MacArthur Airport (ISP) delays and on-time record

Islip, New York KISP #116 US airport by passengers

Live airport-wide delay programs from the FAA, the weather that causes them, and how each airline has actually performed at ISP.

FAA status
No delays reported Updated 7 min ago
Weather now
VFR 69°F Observed 26 min ago
Late departures
23.4%May 2026 to July 2026
Security line
No recent reportsAdd yours

FAA delay status for ISP

The FAA is not reporting a ground stop, ground delay program or other delay at ISP right now.

Source: FAA National Airspace System Status, checked 7 min ago. Airline-specific delays are not shown here.

Current conditions at ISP

VFR

69°F21°C

Good visibility and high cloud base. Normal operations are typical.

Wind
330° 13 mph
Visibility
10+ mi
Clouds
FEW 2,800 ft, FEW 25,000 ft
Ceiling
None
Pressure
29.78 inHg

METARMETAR KISP 122056Z 33011KT 10SM FEW028 FEW250 21/14 A2978 RMK AO2 SLP085 T02060139 53003

Source: NOAA Aviation Weather Center. Observed 26 min ago.

On-time performance at ISP

Based on 1,251 departures from May 2026 to July 2026. A flight counts as late when it leaves 15 or more minutes after schedule.

23.4%Departures late
23.8%Arrivals late
1.08%Cancelled
19.9 minAverage departure delay
On-time performance by airline at ISP
AirlineDeparturesLateCancelled
Southwest Airlines 686 23.9% 1.17%
JetBlue Airways 387 22.2% 0.78%
Frontier Airlines 178 24.2% 2.25%

Source: Bureau of Transportation Statistics, On-Time Performance of reporting carriers. Smaller regional carriers and some airlines are not included.

Late departures by month

AprMayJunJul

How delays work at ISP

A ground stop holds flights bound for ISP at their origin airports. A ground delay program spaces arrivals out so the airport is not overloaded. Departure and arrival delay messages describe the average wait the FAA expects. None of these tell you whether your own flight is late, so always check your airline as well.

Local tips

  • Dunkin and Great American Bagel serve coffee and treats from 4 a.m. to 8 p.m. daily.
  • Point Blue Pub and Provisions, a pre-flight spot for freshly made hot food and drinks, is a good place to eat before a flight.
  • The Pet Relief Area is outdoors, just beyond the Baggage Claim Wing, with pet-friendly turf and bags.
  • Fresh salads and sandwiches are available at the terminal entrance and near the gates. Nathan's hot dogs are in the food court.