PlainFlights

Route · ACK → LGA · 2020–2025 BTS data

Nantucket to New York

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ACK to LGA (Nantucket to New York) ranks #3842 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

77.4%
On-time
-1.6 pts
vs US avg
111 min
Delay when late
1,973
Flights
#3842 of 4927
Corpus placement

Cancelled

6.5%

Best Month

Aug 2025 88%

Worst Month

Jul 2023 68%

Distance

202 mi

Carriers

8

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Sep 2025 38 7 2 1 YX,B6
Aug 2025 126 15 1 0 YX,B6
Jul 2025 132 34 8 0 B6,YX
Jun 2025 81 23 4 0 B6,YX
Sep 2024 37 3 0 0 YX,B6
Aug 2024 128 20 15 0 B6,YX
Jul 2024 128 33 10 0 B6,YX
Jun 2024 100 22 5 0 B6,YX
May 2024 41 8 2 0 B6,YX
Oct 2023 31 6 0 0 B6
Sep 2023 60 13 6 0 B6,YX
Aug 2023 114 21 0 0 B6,YX
Jul 2023 116 37 13 0 B6,YX
Jun 2023 116 32 9 1 B6,YX
May 2023 35 4 0 0 B6,YX
Oct 2022 63 17 8 0 B6,9E
Sep 2022 91 21 4 0 9E,B6
Aug 2022 120 34 8 0 9E,B6
Jul 2022 104 33 10 0 9E,B6
Jun 2022 60 12 4 0 9E
Sep 2021 33 10 1 0 YX,B6
Aug 2021 53 14 4 0 YX,B6
Jul 2021 54 17 5 0 YX,B6
Jun 2021 42 4 4 0 YX,B6

ACK–LGA seasonal on-time pattern

Best: May (84.2%) · weakest: July (72.3%)

70%75%80%85% MayJunJulAugSepOct 75.5%

Strongest calendar month

May

84.2% on-time · ~38 flights/mo

Busiest calendar month

August

~97 flights/mo avg

Weakest calendar month

July

72.3% on-time · ~94 flights/mo

Cancellation Rate

6.5%

123 of 1,903 flights

Diversion Rate

0.1%

2 of 1,903 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

LGA - New York

Full on-time, delay-cause, and seasonal performance for New York, NY.

LGA on-time profile

Compare the two airports

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

Compare ACK vs LGA

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: New York · fleet on-time rank #3984 of 4927.

What the Data Says About ACK to LGA

The Nantucket to New York corridor (ACK to LGA) posts a 77.4% on-time rate on the lower edge of the average band, based on 1,973 tracked flights. Late flights run 111.2 minutes behind on average. 8 carriers cover the 202-mile route; over the last 24 months, 123 of 1,903 flights were cancelled (6.5%) and 0.1% diverted.

The monthly split is wide on this route: Aug 2025 posted the strongest performance at 88% on-time, while Jul 2023 came in at just 68% - a 20-point swing worth factoring into travel timing.

On the multi-year calendar, ACK–LGA peaks in May at 84.2% on-time while August carries the heaviest traffic (~97 flights per month) ; the softest month is July at 72.3%, a 11.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does ACK to LGA rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, ACK to LGA ranks #3842 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 LGA? ▼
Flights from Nantucket to New York have a 77.4% on-time rate based on 1,973 flights. The average delay is 111.2 minutes. The best recent month was Aug 2025 with 88% on-time.
What is the cancellation rate for ACK to LGA? ▼
Over the last 24 months, 6.5% of flights on this route were cancelled (123 of 1,903 flights) and 0.1% were diverted.
How far is the flight from ACK to LGA? ▼
The flight distance from Nantucket (ACK) to New York (LGA) is approximately 202 miles. This route is served by 8 carriers.
When is the best time to fly from ACK to LGA? ▼
The best recent month for on-time performance was Aug 2025 (88% on-time). The worst was Jul 2023 (68% on-time). Consider booking during months with historically better performance.

Airports on this route

ACK Airport

Nantucket
LGA Airport

New York
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–LGA data

ACK–LGA is mid-pack at 77.4% on-time; month and carrier mix move more than the corridor headline.

  • Compare ACK and LGA airport profiles: delay causes and top routes differ even on the same corridor. ACK airport
  • If your dates flex, May (84.2% on-time) beats July (72.3%) on this corridor. Seasonal chart
  • 4 other routes post a similar 77.4% 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.