HPN to ACK flight delays & on-time performance
Nonstop flights from Westchester County Airport to Nantucket Memorial Airport · 191 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at HPN or ACK right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from White Plains (HPN) to Nantucket (ACK) arrived on time 86% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 3.4% were cancelled, and 8% arrived an hour or more late.
- JetBlue is the only airline reporting nonstop flights on this route.
- Departures scheduled around 8am did best (91% on time); around 4pm did worst (68%).
- Tuesday was the most reliable day to fly (93% on time) and Sunday the least (78%).
- The largest source of delay minutes was late-arriving aircraft (55%).
Which airline is most on time from HPN to ACK?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| JetBlue | 86% | 3.4% | 14 min | 8.0% | 234 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am91%132 flights
- 9am90%20 flights
- 3pm81%57 flights
- 4pm68%25 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday81%2.9% cancelled
- Tuesday93%9.7% cancelled
- Wednesday90%3.2% cancelled
- Thursday91%0.0% cancelled
- Friday81%0.0% cancelled
- Saturday88%2.9% cancelled
- Sunday78%5.9% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft55%
- Airline (crew, maintenance, cleaning, fueling)22%
- Air traffic control & airport congestion16%
- Extreme weather7%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion50%
- Extreme weather38%
- Airline (crew, maintenance, cleaning, fueling)13%
- Security0%
HPN to ACK: common questions
- How often are HPN to ACK flights on time?
- 86% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from White Plains to Nantucket cancelled?
- 3.4% of scheduled flights were cancelled (8 of 234).
- How long are typical delays?
- Across all flights the average arrival delay was 14 min (early arrivals count as zero). Flights that were late arrived 99 min behind schedule on average, and 8.0% of flights were an hour or more late.
- How long is taxi time at HPN?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ACK to HPN — 78% on time
More flights from White Plains
More flights to Nantucket
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: HPN → ACK, nonstop flights by US airlines that report to the DOT. How we calculate this.