ACK to HPN flight delays & on-time performance
Nonstop flights from Nantucket Memorial Airport to Westchester County Airport · 191 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ACK or HPN right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Nantucket (ACK) to White Plains (HPN) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 4.7% were cancelled, and 10% arrived an hour or more late.
- JetBlue is the only airline reporting nonstop flights on this route.
- Departures scheduled around 2pm did best (83% on time); around 5pm did worst (63%).
- Saturday was the most reliable day to fly (94% on time) and Sunday the least (69%).
- The largest source of delay minutes was late-arriving aircraft (54%).
Which airline is most on time from ACK to HPN?
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 | 78% | 4.7% | 24 min | 10.3% | 234 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 1pm78%77 flights
- 2pm83%73 flights
- 5pm63%25 flights
- 6pm75%58 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday70%2.9% cancelled
- Tuesday78%10.0% cancelled
- Wednesday88%0.0% cancelled
- Thursday69%5.9% cancelled
- Friday81%0.0% cancelled
- Saturday94%8.8% cancelled
- Sunday69%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 aircraft54%
- Airline (crew, maintenance, cleaning, fueling)40%
- Air traffic control & airport congestion5%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather55%
- Air traffic control & airport congestion36%
- Airline (crew, maintenance, cleaning, fueling)9%
- Security0%
ACK to HPN: common questions
- How often are ACK to HPN flights on time?
- 78% 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 Nantucket to White Plains cancelled?
- 4.7% of scheduled flights were cancelled (11 of 234).
- How long are typical delays?
- Across all flights the average arrival delay was 24 min (early arrivals count as zero). Flights that were late arrived 107 min behind schedule on average, and 10.3% of flights were an hour or more late.
- How long is taxi time at ACK?
- Flights on this route spent 15 min taxiing from the gate to takeoff on average.
Related routes
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ACK → HPN, nonstop flights by US airlines that report to the DOT. How we calculate this.