Nantucket (ACK) to White Plains (HPN): On-Time Performance
Data through July 2026
Nantucket (ACK) to White Plains (HPN) 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, 78% arrived on time. Cancellations are the bigger caveat: 4.6% of scheduled flights never departed.
- On-time
- 78%
- arrived <15 min late
- Avg delay
- 24 min
- completed flights
- Cancelled
- 4.6%
- Flights/day
- 0.64
- last 12 months
- Duration
- 1h 4m
- scheduled
- Distance
- 191 mi
Monthly on-time trend
Best time to fly from ACK to HPN
Aim for departures around 2 p.m. (81% on-time); avoid 5 p.m. departures (72%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 70% | 25 min |
| Tuesday | 85% | 25 min |
| Wednesday | 86% | 18 min |
| Thursday | 69% | 36 min |
| Friday | 79% | 37 min |
| Saturdaybest | 89% | 9 min |
| Sunday | 73% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft59%
- Airline operations28%
- National airspace system12%
Frequently asked questions
- How often are flights from ACK to HPN delayed?
- 22% of ACK–HPN 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 24 minutes.
- What is the best time of day to fly from ACK to HPN?
- Departures around 2 p.m. have the best record (81% on-time), while departures around 5 p.m. have the worst (72%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ACK to HPN?
- The scheduled ACK–HPN flight time averages 1h 4m over 191 miles. Actual arrival times vary — flights on this route land 15+ minutes late 22% of the time.
- How often are ACK to HPN flights cancelled?
- 4.6% 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 ACK to HPN?
- Saturday flights have the best record at 89% on-time. Day-of-week differences on this route are meaningful — Thursday trails at 69%.
Explore related pages
More routes from ACK
Other ways to fly to White Plains (HPN)
Related guides
Based on 522 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.