PlainFlights

ACK vs LGA - Airport Comparison

Select two airports to compare on-time performance, delays, cancellations, and top routes using U.S. Department of Transportation Bureau of Transportation Statistics (BTS) data (2020–2025) across all 50 states. See our methodology for how metrics are computed.

Airport A
ACK

Nantucket, MA

Nantucket, Massachusetts

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Airport B
LGA

New York, NY

New York, New York

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Key Performance Metrics

BTS on-time performance data, 2020–2025 cumulative.

Metric ACK LGA
On-Time Rate (higher is better) 80.5% 81.2%
Avg Delay (lower is better) 91.1 min 80.6 min
Delay Rate (lower is better) 19.5% 18.8%
Cancellation Rate (lower is better) 2.49% 1.80%
Total Flights 17,080 1,574,867
Delayed Flights 3,324 295,934
Cancelled Flights 426 28,401
Top Delay Cause Late Aircraft Late Aircraft

✓ / ▲ indicates the more favorable value. Data: BTS On-Time Performance, 2020–2025.

Delay Cause Breakdown

ACK - Nantucket, MA

Late Aircraft 47.9%
NAS 26.9%
Carrier 22.1%
Weather 2.9%
Security 0.2%

LGA - New York, NY

Late Aircraft 41.0%
Carrier 30.2%
NAS 23.9%
Weather 4.7%
Security 0.1%

Top Routes

Top routes from ACK

Route Flights On-Time
ACK → JFK
New York
2,109 76.2%
JFK → ACK
Nantucket
2,109 79.9%
ACK → LGA
New York
1,973 77.4%
LGA → ACK
Nantucket
1,973 83.2%
ACK → DCA
Washington
1,353 79.7%
DCA → ACK
Nantucket
1,353 82.6%

Top routes from LGA

Route Flights On-Time
ORD → LGA
New York
56,539 78.2%
LGA → ORD
Chicago
56,521 80.8%
ATL → LGA
New York
42,079 80.8%
LGA → ATL
Atlanta
42,078 82.2%
LGA → BOS
Boston
39,006 82.4%
BOS → LGA
New York
38,931 83.4%

Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025) Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025) On-time rates exclude cancelled and diverted flights. PlainFlights is not affiliated with BTS or the DOT

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This tool queries live on-time, delay, and cancellation figures for the two selected airports from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.