ISP → BOSIslip to Boston

live

Direct flights from Islip (ISP) to Boston (BOS): 7 nonstop departures observed each week across 1 airline. The median arrival is 14 minutes early. 1 of the 3 tracked flights was cancelled. The nonstop covers 247 km, an estimated 49 minutes in the air. Measured by Pro Flight Search from live flight boards at Islip and Boston. Updated 12 September 2026 at 14:00 UTC.

ISP Islip tracking
BOS Boston smooth · +0
247 km · ~0h 49m est.
dep bank 08:56–15:417x weekly
Running clean · 1 airline · 7x weekly · nonstop
100 / 100

route health from live ISP and BOS delay boards

Median arrival delay is −14 min. 1 of 3 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−14 minacross the last 3 operated legs
Flight time~0h 49mestimated from route distance
Weekly departures7x1 direct airline on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Cape Air

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Cape Air9K

Flights 9K210 varies daily · 9K216 11:30 Mo Tu We Th Fr Su · 9K212 varies daily

History

operated legs · board outcomes
09-129K212cancelledCNX
09-119K216arrived−14
09-109K216arrived−27

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
ISPIslip tracking Full ISP delay board →
BOSBoston +0 min smooth 🌤 few clouds · 6 kt Full BOS delay board →

How the Islip to Boston route actually runs

Pro Flight Search records official board updates for nonstop ISP to BOS flights through the day: 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.

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

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — Islip (ISP) to Boston (BOS) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/ISP-BOS
How we measure this →

ISP to BOS questions

Is ISP–BOS running on time right now?

Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from ISP to BOS?

Great-circle distance is 247 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 47–51 min gate-to-gate on this route.

How often does ISP–BOS fly?

Cape Air runs the route with about 20 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.

What does the route health score measure?

A blend of departure-side delay at ISP and arrival-side delay at BOS, 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.