Historical on-time performance
West Palm Beach to Islip
Flights on PBI–ISP arrive on time 73% of the time over the last 12 months.
based on 1,162 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- JetBlue AirwaysOn-time74%Medianon timep9050 minCancel1.9%Flights522
- Southwest AirlinesOn-time71%Medianon timep9050 minCancel0.9%Flights640
Why flights run late
Delay causes
- Airline21%
- Weather2%
- Air traffic (NAS)13%
- Late aircraft63%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline19%
- Weather75%
- Air traffic (NAS)6%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 16 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly PBI → ISP
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 90% on time.
- Mornings90% on time · p90 10 min · 716 flights
- Middays76% on time · p90 40 min · 1,314 flights
- Afternoons69% on time · p90 60 min · 449 flights
- Overnights63% on time · p90 95 min · 410 flights
- Evenings57% on time · p90 100 min · 364 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 68% to 79% on time.
- Wednesdays79% on time · p90 30 min · 426 flights
- Tuesdays77% on time · p90 50 min · 479 flights
- Saturdays77% on time · p90 45 min · 461 flights
- Mondays74% on time · p90 60 min · 440 flights
- Fridays74% on time · p90 45 min · 458 flights
- Thursdays71% on time · p90 60 min · 491 flights
- Sundays68% on time · p90 75 min · 498 flights
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