Route · ACK → JFK · 2020–2025 BTS data
Nantucket to New York
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ACK to JFK (Nantucket to New York) ranks #3762 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 76.2%
- On-time
- -2.8 pts
- vs US avg
- 106 min
- Delay when late
- 2,109
- Flights
- #3762 of 4927
- Corpus placement
Cancelled
5.1%
Best Month
Sep 2022 83%
Worst Month
Jun 2025 57%
Distance
199 mi
Carriers
4
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Sep 2025 | 39 | 9 | 0 | 0 | YX,B6 |
| Aug 2025 | 85 | 18 | 1 | 0 | YX,B6 |
| Jul 2025 | 93 | 36 | 9 | 0 | B6,YX |
| Jun 2025 | 68 | 29 | 5 | 0 | B6,YX |
| Sep 2024 | 35 | 2 | 1 | 0 | YX,B6 |
| Aug 2024 | 93 | 21 | 11 | 0 | B6,YX |
| Jul 2024 | 93 | 30 | 5 | 0 | B6,YX |
| Jun 2024 | 78 | 17 | 7 | 0 | B6,YX |
| May 2024 | 32 | 8 | 1 | 0 | B6,YX |
| Oct 2023 | 38 | 10 | 1 | 0 | B6 |
| Sep 2023 | 65 | 21 | 8 | 0 | B6,YX |
| Aug 2023 | 97 | 24 | 2 | 0 | B6,YX |
| Jul 2023 | 105 | 36 | 13 | 0 | B6,YX |
| Jun 2023 | 97 | 31 | 5 | 0 | B6,YX |
| May 2023 | 42 | 10 | 0 | 0 | B6,YX |
| Sep 2022 | 60 | 10 | 0 | 0 | 9E,B6 |
| Aug 2022 | 124 | 22 | 0 | 0 | 9E,B6 |
| Jul 2022 | 125 | 26 | 3 | 1 | 9E,B6 |
| Jun 2022 | 112 | 22 | 5 | 0 | 9E,B6 |
| May 2022 | 37 | 9 | 1 | 0 | 9E,B6 |
| Oct 2021 | 30 | 1 | 0 | 0 | B6 |
| Sep 2021 | 67 | 13 | 2 | 0 | 9E,B6 |
| Aug 2021 | 112 | 26 | 4 | 0 | 9E,B6 |
| Jul 2021 | 138 | 44 | 12 | 0 | 9E,B6 |
ACK–JFK seasonal on-time pattern
Best: October (83.8%) · weakest: July (69.7%)
Strongest calendar month
October
83.8% on-time · ~34 flights/mo
Busiest calendar month
July
~98 flights/mo avg
Weakest calendar month
July
69.7% on-time · ~98 flights/mo
Cancellation Rate
5.1%
96 of 1,865 flights
Diversion Rate
0.1%
1 of 1,865 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 profileJFK - New York
Full on-time, delay-cause, and seasonal performance for New York, NY.
JFK on-time profileCompare the two airports
See ACK and JFK side by side on delays, cancellations, and reliability.
Compare ACK vs JFKOrigin-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: New York · fleet on-time rank #4258 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to ACK–JFK.
Routes with a similar on-time rate
What the Data Says About ACK to JFK
The Nantucket to New York corridor (ACK to JFK) posts a 76.2% on-time rate on the lower edge of the average band, based on 2,109 tracked flights. Late flights run 105.9 minutes behind on average. 4 carriers cover the 199-mile route; over the last 24 months, 96 of 1,865 flights were cancelled (5.1%) and 0.1% diverted.
The monthly split is wide on this route: Sep 2022 posted the strongest performance at 83% on-time, while Jun 2025 came in at just 57% - a 26-point swing worth factoring into travel timing.
On the multi-year calendar, ACK–JFK peaks in October at 83.8% on-time while July carries the heaviest traffic (~98 flights per month) ; the softest month is July at 69.7%, a 14.1-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does ACK to JFK rank among US routes by traffic? ▼
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Airports on this route
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–JFK data
ACK–JFK is mid-pack at 76.2% on-time; month and carrier mix move more than the corridor headline.
- Compare ACK and JFK airport profiles: delay causes and top routes differ even on the same corridor. ACK airport
- If your dates flex, October (83.8% on-time) beats July (69.7%) on this corridor. Seasonal chart
- 4 other routes post a similar 76.2% 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.
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.