White Plains (HPN) to Nantucket (ACK): On-Time Performance
Data through July 2026
White Plains (HPN) to Nantucket (ACK) is a thinner route than most in this dataset — 234 departures over the past year, roughly 5 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 84% arrived on time, comfortably above the national average of 78%. Cancellations are the bigger caveat: 3.4% of scheduled flights never departed.
- On-time
- 84%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 3.4%
- Flights/day
- 0.64
- last 12 months
- Duration
- 1h 4m
- scheduled
- Distance
- 191 mi
Monthly on-time trend
Best time to fly from HPN to ACK
Aim for departures around 8 a.m. (88% on-time); avoid 3 p.m. departures (80%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 82% | 15 min |
| Tuesdaybest | 90% | 8 min |
| Wednesday | 88% | 12 min |
| Thursday | 84% | 10 min |
| Friday | 83% | 16 min |
| Saturday | 85% | 14 min |
| Sunday | 76% | 19 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft42%
- Airline operations19%
- National airspace system19%
- Weather20%
Frequently asked questions
- How often are flights from HPN to ACK delayed?
- 16% of HPN–ACK flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 13 minutes.
- What is the best time of day to fly from HPN to ACK?
- Departures around 8 a.m. have the best record (88% on-time), while departures around 3 p.m. have the worst (80%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from HPN to ACK?
- The scheduled HPN–ACK flight time averages 1h 4m over 191 miles. Actual arrival times vary — flights on this route land 15+ minutes late 16% of the time.
- How often are HPN to ACK flights cancelled?
- 3.4% of scheduled flights on this route were cancelled between 2024-07 and 2026-07 — several times the typical US rate, so consider earlier departures or backup options.
- What day of the week is most reliable for HPN to ACK?
- Tuesday flights have the best record at 90% on-time. Day-of-week differences on this route are meaningful — Sunday trails at 76%.
Explore related pages
More routes from HPN
Other ways to fly to Nantucket (ACK)
Related guides
Based on 522 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.