ACK → BOSNantucket to Boston

live

Direct flights from Nantucket (ACK) to Boston (BOS): 7 nonstop departures observed each week across 1 airline. 100% of the last 6 tracked flights arrived within 15 minutes of schedule. The median arrival is 8 minutes early. No cancellations were recorded across the 6 tracked flights. The nonstop covers 146 km, an estimated 41 minutes in the air. Measured by Pro Flight Search from live flight boards at Nantucket and Boston. Updated 28 October 2026 at 02:09 UTC.

Today, ACK → BOS

Wed 28 Oct · local times
  1. · 9K5001Cape Air Departed Landed 07:50 −5
  2. · 9K5041Cape Air On schedule BOS est. 10:25 +10sched 10:15
  3. · 9K5061Cape Air Departed Landed 15:53 +13
  4. · 9K5221Cape Air Departed Landed 18:15 −10
  5. · 9K5301Cape Air On schedule BOS 12:35scheduled
  6. · 9K5341Cape Air On schedule BOS est. 17:00sched 17:18

Checked BOS board 19:21

ACK Nantucket tracking
BOS Boston smooth · +0
146 km · ~0h 41m est.
dep bank 07:55–18:257x weekly
Runs reliable · 1 airline · 7x weekly · nonstop
100% on time

of the last 6 tracked ACK → BOS flights arrived within 15 minutes

Median arrival delay is −8 min. 0 of 6 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−8 minacross the last 6 arrivals
Flight time~0h 41mestimated 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 Air9K100% on time

Flights 9K5001 07:55 daily · 9K5002 07:55 We Th Fr Su · 9K5041 10:15 daily · 9K5301 12:35 daily

History

operated legs · board outcomes
10-289K5001arrived−5
10-289K5061arrived+13
10-289K5221arrived−10
10-279K5001arrived−8
10-279K5041arrived−20
10-279K5061arrived−9

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
ACKNantucket tracking Full ACK delay board →
BOSBoston +0 min smooth 🌤 mostly cloudy · SSE 5 kt Full BOS delay board →

How the Nantucket to Boston route actually runs

Pro Flight Search records official board updates for nonstop ACK 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 — Nantucket (ACK) to Boston (BOS) route reliability, measured from operated flights on official airport boards.

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

ACK to BOS questions

Is ACK–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 ACK to BOS?

Great-circle distance is 146 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 40–43 min gate-to-gate on this route.

How often does ACK–BOS fly?

Cape Air runs the route with about 63 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 ACK 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.