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Route · LGA → ACK · 2020–2025 BTS data

New York to Nantucket

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), LGA to ACK (New York to Nantucket) ranks #3843 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

83.2%
On-time
+4.2 pts
vs US avg
81 min
Delay when late
1,973
Flights
#3843 of 4927
Corpus placement

Cancelled

4.2%

Best Month

Jun 2022 90%

Worst Month

Jul 2023 71%

Distance

202 mi

Carriers

8

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Sep 2025 38 6 0 0 YX,B6
Aug 2025 126 13 0 0 YX,B6
Jul 2025 132 24 4 0 B6,YX
Jun 2025 81 17 3 2 B6,YX
Sep 2024 37 1 0 0 YX,B6
Aug 2024 128 16 5 0 B6,YX
Jul 2024 128 30 7 1 B6,YX
Jun 2024 100 18 1 4 B6,YX
May 2024 40 4 1 1 B6,YX
Oct 2023 31 7 0 0 B6
Sep 2023 60 10 5 0 B6,YX
Aug 2023 114 15 0 0 B6,YX
Jul 2023 116 34 10 0 B6,YX
Jun 2023 116 19 6 1 B6,YX
May 2023 35 2 0 0 B6,YX
Oct 2022 63 16 5 2 B6,9E
Sep 2022 91 15 3 1 9E,B6
Aug 2022 120 17 7 2 9E,B6
Jul 2022 104 24 8 2 9E,B6
Jun 2022 60 6 3 1 9E
Sep 2021 33 5 0 0 YX,B6
Aug 2021 53 14 4 0 YX,B6
Jul 2021 54 10 5 0 YX,B6
Jun 2021 42 1 3 0 YX,B6

LGA–ACK seasonal on-time pattern

Best: May (92.0%) · weakest: October (75.5%)

70%75%80%85%90%95% MayJunJulAugSepOct 75.5%

Strongest calendar month

May

92.0% on-time · ~38 flights/mo

Busiest calendar month

August

~97 flights/mo avg

Weakest calendar month

October

75.5% on-time · ~47 flights/mo

Cancellation Rate

4.2%

80 of 1,902 flights

Diversion Rate

0.9%

17 of 1,902 flights

Explore origin & destination

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

LGA - New York

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

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

Compare LGA vs ACK

Origin-hub reliability standing

Mid-pack among LGA departures

From LGA, this corridor sits with 64 other 75–85% on-time routes out of 75 tracked departures, not the hub's reliability leaders (8 at ≥85%) and not the softest ( 3 below 75%). Destination: Nantucket · fleet on-time rank #1877 of 4927.

What the Data Says About LGA to ACK

Bureau of Transportation Statistics records show New York to Nantucket (LGA to ACK) running a 83.2% on-time rate over 1,973 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 81.4 minutes. The 202-mile corridor is served by 8 carriers, and over the last 24 months 4.2% of 1,902 flights were cancelled, 0.9% diverted.

The monthly split is wide on this route: Jun 2022 posted the strongest performance at 90% on-time, while Jul 2023 came in at just 71% - a 19-point swing worth factoring into travel timing.

On the multi-year calendar, LGA–ACK peaks in May at 92.0% on-time while August carries the heaviest traffic (~97 flights per month) ; the softest month is October at 75.5%, a 16.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does LGA to ACK rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, LGA to ACK ranks #3843 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 LGA to ACK? ▼
Flights from New York to Nantucket have a 83.2% on-time rate based on 1,973 flights. The average delay is 81.4 minutes. The best recent month was Jun 2022 with 90% on-time.
What is the cancellation rate for LGA to ACK? ▼
Over the last 24 months, 4.2% of flights on this route were cancelled (80 of 1,902 flights) and 0.9% were diverted.
How far is the flight from LGA to ACK? ▼
The flight distance from New York (LGA) to Nantucket (ACK) is approximately 202 miles. This route is served by 8 carriers.
When is the best time to fly from LGA to ACK? ▼
The best recent month for on-time performance was Jun 2022 (90% on-time). The worst was Jul 2023 (71% on-time). Consider booking during months with historically better performance.

Airports on this route

LGA Airport

New York
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 LGA–ACK data

LGA–ACK runs 4.2 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare LGA and ACK airport profiles: delay causes and top routes differ even on the same corridor. LGA airport
  • If your dates flex, May (92.0% on-time) beats October (75.5%) on this corridor. Seasonal chart
  • 4 other routes post a similar 83.2% 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.

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.