PBI (West Palm Beach) to ISP (Islip) flights arrive on time 78% of the time. The most reliable airline on this route is JetBlue Airways at 82%. The average delay is 73 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated March 2026.PBI → ISP
PBI (West Palm Beach) to ISP (Islip)
PBI → ISP on-time performance by month
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This route is on time most of the time. About 78% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
JetBlue Airways is significantly more reliable on this route at 82% on time vs Frontier Airlines at 67%.
Airline Comparison
JetBlue Airways leads at 82% on time; Frontier Airlines trails at 67%.
Accurate?
Good to know
Departing from PBI
76% on timeExpect ~18 min sitting on the taxiway after your gate pushes back. PBI has long runway queues.
TSA is currently ~5 min. Best time: 4 AM (about 5 min).
Arriving at ISP
77% on timeWhen flights into ISP are late, the average delay is 68 minutes. Build buffer if you have ground plans.
If connecting at ISP: TSA is ~5 min right now. Allow at least 60 minutes for a domestic connection.
ISP has a 2.1% cancellation rate — keep the airline app handy for rebooking.
Flight cancelled or delayed?
Check what JetBlue Airways owes you — refund rights, action plan, complaint email. Free.
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Data last updated March 2026. Source: Bureau of Transportation Statistics.