LGA to ACK flight delays & on-time performance
Nonstop flights from LaGuardia Airport to Nantucket Memorial Airport · 202 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at LGA or ACK right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from New York (LGA) to Nantucket (ACK) arrived on time 82% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 3.4% were cancelled, and 5% arrived an hour or more late.
- Republic Airways was the most punctual airline here (82% on time); JetBlue was the least (80%).
- Departures scheduled around 11am did best (96% on time); around 4pm did worst (73%).
- Tuesday was the most reliable day to fly (88% on time) and Wednesday the least (78%).
- The largest source of delay minutes was late-arriving aircraft (44%).
Which airline is most on time from LGA to ACK?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 82% | 3.1% | 10 min | 4.9% | 320 |
| JetBlue | 80% | 4.3% | 12 min | 5.7% | 92 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 10am84%109 flights
- 11am96%25 flights
- 12pm88%54 flights
- 1pm80%92 flights
- 2pm77%109 flights
- 4pm73%15 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday80%3.4% cancelled
- Tuesday88%10.4% cancelled
- Wednesday78%0.0% cancelled
- Thursday83%0.0% cancelled
- Friday82%0.0% cancelled
- Saturday81%6.7% cancelled
- Sunday80%4.4% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft44%
- Airline (crew, maintenance, cleaning, fueling)28%
- Air traffic control & airport congestion24%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather36%
- Air traffic control & airport congestion36%
- Airline (crew, maintenance, cleaning, fueling)29%
- Security0%
LGA to ACK: common questions
- How often are LGA to ACK flights on time?
- 82% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from New York to Nantucket cancelled?
- 3.4% of scheduled flights were cancelled (14 of 412).
- How long are typical delays?
- Across all flights the average arrival delay was 10 min (early arrivals count as zero). Flights that were late arrived 52 min behind schedule on average, and 5.1% of flights were an hour or more late.
- How long is taxi time at LGA?
- Flights on this route spent 23 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ACK to LGA — 76% on time
More flights from New York
More flights to Nantucket
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: LGA → ACK, nonstop flights by US airlines that report to the DOT. How we calculate this.