Is PHL–ISP running on time right now?
Some delays possible. The departure side at PHL is the weaker end, route health score 64/100. The airports section above carries the live status and delay window at both ends.
live
Direct flights from Philadelphia (PHL) to Islip (ISP) run nonstop between the two airports. The median arrival is 17 minutes late. No cancellations were recorded across the 1 tracked flight. The nonstop covers 208 km, an estimated 46 minutes in the air. Measured by Pro Flight Search from live flight boards at Philadelphia and Islip. Updated 18 August 2026 at 03:39 UTC.
PHL
Philadelphia
smooth · +5
ISP
Islip
tracking
208 km · ~0h 46m est.
Under pressure · 0 airlines · nonstop
64 / 100
route health from live PHL and ISP delay boards
Median arrival delay is +17 min. 0 of 1 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Search live fares for this route →Median arrival+17 minacross the last 1 operated legs
Flight time~0h 46mestimated from route distance
History
operated legs · board outcomes08-17KOW971departed+17
Actual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsnext sweep in 120s
How the Philadelphia to Islip route actually runs
Pro Flight Search tracks every published board update for nonstop PHL to ISP flights: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises. Fares link straight to the operating airline with no markups.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
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Suggested citation
Pro Flight Search — Philadelphia (PHL) to Islip (ISP) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/PHL-ISP
PHL to ISP questions
How long is the flight from PHL to ISP?
Great-circle distance is 208 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 45–48 min gate-to-gate on this route.
What does the route health score measure?
A blend of departure-side delay at PHL and arrival-side delay at ISP, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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