BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
PBI→ISP

West Palm Beach/Palm Beach, FL (PBI) to Islip, NY (ISP) flight delay odds

72.2% of 1,223 official scheduled PBI-to-ISP flights arrived on time; 17.6% arrived at least 30 minutes late and 1.6% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
72.2%arrived on time
17.6%30+ min late
1.6%cancelled
1,223scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.8%all scheduled flights
120+ minutes late3.7%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+10.7 mincompleted flights

Which departure time was most reliable for PBI to ISP?

Among qualifying PBI-to-ISP departure window results, Early morning had the highest on-time rate: 88.7% of 142 flights. Evening was lowest at 53.7% across 188 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning14288.7%4.9%1.4%
Late morning32879.3%10.1%1.5%
Afternoon47472.8%18.8%0.8%
Evening18853.7%30.9%1.6%
Night9156.0%30.8%6.6%

Which weekday was most reliable for PBI to ISP?

Among qualifying PBI-to-ISP weekday results, Wednesday had the highest on-time rate: 82.4% of 170 flights. Sunday was lowest at 63.9% across 183 flights.

DayFlightsOn time30+ minCancelled
Monday17568.0%21.1%4.0%
Tuesday17775.1%17.5%0.0%
Wednesday17082.4%10.6%0.0%
Thursday17768.4%20.3%0.0%
Friday17471.8%16.7%1.1%
Saturday16776.6%15.6%0.6%
Sunday18363.9%20.8%5.5%

Which airline was most reliable for PBI to ISP?

Among qualifying PBI-to-ISP airline results, JetBlue Airways had the highest on-time rate: 75.8% of 542 flights. Frontier Airlines was lowest at 45.1% across 71 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines61072.1%17.5%1.0%
JetBlue Airways54275.8%14.6%1.8%
Frontier Airlines7145.1%40.8%5.6%

Which month was most reliable for PBI to ISP?

Among qualifying PBI-to-ISP month results, October 2025 had the highest on-time rate: 90.2% of 92 flights. February 2026 was lowest at 58.2% across 134 flights.

MonthFlightsOn time30+ minCancelled
July 20259464.9%25.5%0.0%
August 20258875.0%17.0%0.0%
September 20258688.4%7.0%0.0%
October 20259290.2%5.4%0.0%
November 202510077.0%11.0%3.0%
December 202513364.7%27.1%1.5%
January 202613066.9%17.7%4.6%
February 202613458.2%25.4%5.2%
March 20269863.3%23.5%1.0%
April 202610663.2%21.7%0.9%
May 20268289.0%9.8%0.0%
June 20268083.8%8.8%0.0%

What drove PBI to ISP delay minutes?

Late aircraft was the largest recorded PBI-to-ISP delay category, accounting for 64.4% of 19,710 BTS-attributed delay minutes during July 2025–June 2026.

Airline21.4%
Late aircraft64.4%
National airspace12.6%
Weather1.4%
Security0.2%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.