BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
ACK→LGA

Nantucket, MA (ACK) to New York, NY (LGA) flight delay odds

74.2% of 419 official scheduled ACK-to-LGA flights arrived on time; 16.5% arrived at least 30 minutes late and 4.1% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALHigher disruption
74.2%arrived on time
16.5%30+ min late
4.1%cancelled
419scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.3%all scheduled flights
120+ minutes late3.6%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+11.5 mincompleted flights

Which departure time was most reliable for ACK to LGA?

Among qualifying ACK-to-LGA departure window results, Late morning had the highest on-time rate: 83.7% of 104 flights. Afternoon was lowest at 72.6% across 299 flights.

Departure windowFlightsOn time30+ minCancelled
Late morning10483.7%12.5%1.9%
Afternoon29972.6%17.1%4.0%

Which weekday was most reliable for ACK to LGA?

Among qualifying ACK-to-LGA weekday results, Saturday had the highest on-time rate: 83.3% of 60 flights. Monday was lowest at 63.8% across 58 flights.

DayFlightsOn time30+ minCancelled
Monday5863.8%20.7%6.9%
Tuesday5682.1%12.5%1.8%
Wednesday5064.0%30.0%2.0%
Thursday5981.4%10.2%6.8%
Friday6877.9%16.2%2.9%
Saturday6083.3%6.7%1.7%
Sunday6866.2%20.6%5.9%

Which airline was most reliable for ACK to LGA?

Among qualifying ACK-to-LGA airline results, JetBlue Airways had the highest on-time rate: 84.0% of 100 flights. Republic Airways was lowest at 71.2% across 319 flights.

AirlineFlightsOn time30+ minCancelled
Republic Airways31971.2%17.6%4.7%
JetBlue Airways10084.0%13.0%2.0%

Which month was most reliable for ACK to LGA?

Among qualifying ACK-to-LGA month results, August 2025 had the highest on-time rate: 87.3% of 126 flights. May 2026 was lowest at 59.1% across 22 flights.

MonthFlightsOn time30+ minCancelled
July 202513268.2%21.2%6.1%
August 202512687.3%7.1%0.8%
September 20253873.7%10.5%5.3%
May 20262259.1%31.8%0.0%
June 20269169.2%20.9%5.5%

What drove ACK to LGA delay minutes?

Airline was the largest recorded ACK-to-LGA delay category, accounting for 39.9% of 7,748 BTS-attributed delay minutes during July 2025–June 2026.

Airline39.9%
Late aircraft25.9%
National airspace31.9%
Weather2.2%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.