PBI to ISP flight delays & on-time performance
Nonstop flights from Palm Beach International Airport to Long Island MacArthur Airport · 1,052 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PBI or ISP right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from West Palm Beach/Palm Beach (PBI) to Islip (ISP) arrived on time 74% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.6% were cancelled, and 9% arrived an hour or more late.
- JetBlue was the most punctual airline here (77% on time); Frontier Airlines was the least (50%).
- Departures scheduled around 7am did best (92% on time); around 7pm did worst (41%).
- Wednesday was the most reliable day to fly (82% on time) and Sunday the least (69%).
- The largest source of delay minutes was late-arriving aircraft (64%).
Which airline is most on time from PBI to ISP?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| JetBlue | 77% | 1.7% | 16 min | 9.3% | 573 |
| Southwest Airlines | 74% | 1.0% | 16 min | 7.0% | 580 |
| Frontier Airlines | 50% | 5.8% | 34 min | 18.8% | 69 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am92%90 flights
- 8am86%51 flights
- 9am74%41 flights
- 10am85%139 flights
- 11am77%163 flights
- 12pm80%240 flights
- 1pm69%118 flights
- 2pm67%52 flights
- 3pm64%14 flights
- 4pm67%43 flights
- 6pm62%42 flights
- 7pm41%70 flights
- 8pm66%66 flights
- 9pm62%85 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday70%4.0% cancelled
- Tuesday78%0.0% cancelled
- Wednesday82%0.0% cancelled
- Thursday71%0.0% cancelled
- Friday70%1.1% cancelled
- Saturday78%0.6% cancelled
- Sunday69%5.5% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft64%
- Airline (crew, maintenance, cleaning, fueling)22%
- Air traffic control & airport congestion13%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather70%
- Airline (crew, maintenance, cleaning, fueling)25%
- Air traffic control & airport congestion5%
- Security0%
PBI to ISP: common questions
- How often are PBI to ISP flights on time?
- 74% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from West Palm Beach/Palm Beach to Islip cancelled?
- 1.6% of scheduled flights were cancelled (20 of 1,222).
- How long are typical delays?
- Across all flights the average arrival delay was 17 min (early arrivals count as zero). Flights that were late arrived 60 min behind schedule on average, and 8.7% of flights were an hour or more late.
- How long is taxi time at PBI?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ISP to PBI — 72% on time
More flights from West Palm Beach/Palm Beach
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PBI → ISP, nonstop flights by US airlines that report to the DOT. How we calculate this.