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Route · ACK → HPN · 2020–2025 BTS data

Nantucket to White Plains

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ACK to HPN (Nantucket to White Plains) ranks #4789 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

84.1%
On-time
+5.1 pts
vs US avg
106 min
Delay when late
624
Flights
#4789 of 4927
Corpus placement

Cancelled

4.6%

Best Month

Aug 2025 92%

Worst Month

Jul 2025 71%

Distance

191 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Sep 2025 32 4 0 0 B6
Aug 2025 62 5 1 0 B6
Jul 2025 62 18 3 1 B6
Jun 2025 49 10 4 0 B6
Sep 2024 33 1 0 0 B6
Aug 2024 62 13 4 0 B6
Jul 2024 62 11 2 0 B6
Jun 2024 48 7 3 0 B6
Sep 2023 30 4 3 0 B6
Aug 2023 31 2 0 0 B6
Jul 2023 31 12 2 0 B6
Jun 2023 30 2 3 0 B6
Sep 2022 30 2 0 0 B6
Aug 2022 31 3 3 0 B6
Jul 2022 31 5 1 0 B6

Cancellation Rate

4.6%

29 of 624 flights

Diversion Rate

0.2%

1 of 624 flights

Explore origin & destination

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

ACK - Nantucket

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

ACK on-time profile

HPN - White Plains

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

HPN on-time profile

Compare the two airports

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

Compare ACK vs HPN

Origin-hub reliability standing

Mid-pack among ACK departures

From ACK, this corridor sits with 5 other 75–85% on-time routes out of 5 tracked departures, not the hub's reliability leaders (0 at ≥85%) and not the softest ( 0 below 75%). Destination: White Plains · fleet on-time rank #1524 of 4927.

What the Data Says About ACK to HPN

Bureau of Transportation Statistics records show Nantucket to White Plains (ACK to HPN) running a 84.1% on-time rate over 624 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 105.7 minutes. The 191-mile corridor is served by 1 carrier, and over the last 24 months 4.6% of 624 flights were cancelled, 0.2% diverted.

The monthly split is wide on this route: Aug 2025 posted the strongest performance at 92% on-time, while Jul 2025 came in at just 71% - a 21-point swing worth factoring into travel timing.

On the multi-year calendar, ACK–HPN peaks in September at 91.2% on-time while July carries the heaviest traffic (~47 flights per month) ; the softest month is July at 75.3%, a 15.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does ACK to HPN rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, ACK to HPN ranks #4789 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 ACK to HPN? ▼
Flights from Nantucket to White Plains have a 84.1% on-time rate based on 624 flights. The average delay is 105.7 minutes. The best recent month was Aug 2025 with 92% on-time.
What is the cancellation rate for ACK to HPN? ▼
Over the last 24 months, 4.6% of flights on this route were cancelled (29 of 624 flights) and 0.2% were diverted.
How far is the flight from ACK to HPN? ▼
The flight distance from Nantucket (ACK) to White Plains (HPN) is approximately 191 miles. This route is served by 1 carrier.
When is the best time to fly from ACK to HPN? ▼
The best recent month for on-time performance was Aug 2025 (92% on-time). The worst was Jul 2025 (71% on-time). Consider booking during months with historically better performance.

Airports on this route

ACK Airport

Nantucket
HPN Airport

White Plains
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 ACK–HPN data

ACK–HPN runs 5.1 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare ACK and HPN airport profiles: delay causes and top routes differ even on the same corridor. ACK airport
  • If your dates flex, September (91.2% on-time) beats July (75.3%) on this corridor. Seasonal chart
  • 4 other routes post a similar 84.1% 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.