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Route · HPN → ACK · 2020–2025 BTS data

White Plains to Nantucket

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), HPN to ACK (White Plains to Nantucket) ranks #4790 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

86.4%
On-time
+7.4 pts
vs US avg
89 min
Delay when late
624
Flights
#4790 of 4927
Corpus placement

Cancelled

2.6%

Best Month

Aug 2025 92%

Worst Month

Jul 2024 76%

Distance

191 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Sep 2025 32 1 0 0 B6
Aug 2025 62 5 0 0 B6
Jul 2025 62 8 2 0 B6
Jun 2025 49 9 2 1 B6
Sep 2024 33 3 0 1 B6
Aug 2024 62 10 4 0 B6
Jul 2024 62 15 2 0 B6
Jun 2024 48 6 0 1 B6
Sep 2023 30 3 2 0 B6
Aug 2023 31 4 0 0 B6
Jul 2023 31 10 2 0 B6
Jun 2023 30 2 1 2 B6
Sep 2022 30 3 0 0 B6
Aug 2022 31 4 1 0 B6
Jul 2022 31 2 0 1 B6

Cancellation Rate

2.6%

16 of 624 flights

Diversion Rate

1.0%

6 of 624 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

HPN - White Plains

Full on-time, delay-cause, and seasonal performance for White Plains, NY.

HPN on-time profile

ACK - Nantucket

Full on-time, delay-cause, and seasonal performance for Nantucket, MA.

ACK on-time profile

Compare the two airports

See HPN and ACK side by side on delays, cancellations, and reliability.

Compare HPN vs ACK

Origin-hub reliability standing

Among HPN's stronger departures

HPN → ACK posts a 86.4% on-time rate, landing in the ≥85% band with 3 of 12 BTS-tracked routes leaving White Plains. The same hub also shows 8 mid-band and 1 challenged departures · fleet-wide on-time rank #792 of 4927 (highest on-time = #1).

What the Data Says About HPN to ACK

White Plains to Nantucket (HPN to ACK) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.4% on-time rate across 624 flights, with delays that do happen averaging 88.7 minutes. The corridor runs roughly 191 miles and is served by 1 carrier. Over the most recent 24 months, 16 of 624 flights were cancelled (2.6%) and 6 diverted (1.0%).

The monthly split is wide on this route: Aug 2025 posted the strongest performance at 92% on-time, while Jul 2024 came in at just 76% - a 16-point swing worth factoring into travel timing.

On the multi-year calendar, HPN–ACK peaks in September at 92.0% on-time while July carries the heaviest traffic (~47 flights per month) ; the softest month is July at 81.2%, a 10.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does HPN to ACK rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, HPN to ACK ranks #4790 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from HPN to ACK? ▼
Flights from White Plains to Nantucket have a 86.4% on-time rate based on 624 flights. The average delay is 88.7 minutes. The best recent month was Aug 2025 with 92% on-time.
What is the cancellation rate for HPN to ACK? ▼
Over the last 24 months, 2.6% of flights on this route were cancelled (16 of 624 flights) and 1.0% were diverted.
How far is the flight from HPN to ACK? ▼
The flight distance from White Plains (HPN) to Nantucket (ACK) is approximately 191 miles. This route is served by 1 carrier.
When is the best time to fly from HPN to ACK? ▼
The best recent month for on-time performance was Aug 2025 (92% on-time). The worst was Jul 2024 (76% on-time). Consider booking during months with historically better performance.

Airports on this route

HPN Airport

White Plains
ACK Airport

Nantucket
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using HPN–ACK data

HPN–ACK runs 7.4 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare HPN and ACK airport profiles: delay causes and top routes differ even on the same corridor. HPN airport
  • If your dates flex, September (92.0% on-time) beats July (81.2%) on this corridor. Seasonal chart
  • 4 other routes post a similar 86.4% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.