Islip, NY
CIslip, NY, NY — ISP
On-Time Rate
78.3%
2019-2025
Avg Delay
15.3 min
when delayed
Cancel Rate
3.0%
flights cancelled
Total Flights
31,828
2019-2025
Best Month
Oct
86.0% on-time
Worst Month
Jul
72.0% on-time
Best Departure Time
5:00
90.6% on-time
12-Month On-Time Trend
Delay Causes
Best Time to Fly (By Hour)
Seasonal Pattern
Airlines at ISP
| Airline | Flights | On-Time | Avg Delay |
|---|---|---|---|
| Southwest Airlines | 19,443 | 81.9% | 0.0 min |
| Frontier Airlines | 11,301 | 72.6% | 0.0 min |
| JetBlue Airways | 1,084 | 73.2% | 0.0 min |
Most Delayed Routes
| Destination | On-Time |
|---|---|
| ISP → ATLAtlanta, GA | 69.7% |
| ISP → BNANashville, TN | 73.1% |
| ISP → TPATampa, FL | 73.7% |
| ISP → RDURaleigh/Durham, NC | 74.8% |
| ISP → FLLFort Lauderdale, FL | 74.9% |
Most Punctual Routes
| Destination | On-Time |
|---|---|
| ISP → BWIBaltimore, MD | 86.1% |
| ISP → MYRMyrtle Beach, SC | 78.5% |
| ISP → MIAMiami, FL | 76.4% |
| ISP → PBIWest Palm Beach/Palm Beach, FL | 76.1% |
| ISP → MCOOrlando, FL | 75.8% |
Was your flight from Islip, NY delayed?
You may be entitled to compensation of up to $700 per passenger for delayed or cancelled flights. Check your eligibility now.
Check CompensationData source: Bureau of Transportation Statistics (BTS) On-Time Performance dataset. Statistics are based on reported flight data from 2019-2025. See our data methodology for details.