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

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

82.3% of 419 official scheduled LGA-to-ACK flights arrived on time; 10.5% arrived at least 30 minutes late and 1.4% 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 SIGNALLower disruption
82.3%arrived on time
10.5%30+ min late
1.4%cancelled
419scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.3%all scheduled flights
120+ minutes late1.9%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival-1.6 mincompleted flights

Which departure time was most reliable for LGA to ACK?

Among qualifying LGA-to-ACK departure window results, Late morning had the highest on-time rate: 89.1% of 165 flights. Afternoon was lowest at 78.2% across 248 flights.

Departure windowFlightsOn time30+ minCancelled
Late morning16589.1%6.1%0.0%
Afternoon24878.2%13.7%1.6%

Which weekday was most reliable for LGA to ACK?

Among qualifying LGA-to-ACK weekday results, Tuesday had the highest on-time rate: 87.5% of 56 flights. Wednesday was lowest at 78.0% across 50 flights.

DayFlightsOn time30+ minCancelled
Monday5882.8%10.3%3.4%
Tuesday5687.5%8.9%0.0%
Wednesday5078.0%16.0%0.0%
Thursday5983.1%10.2%3.4%
Friday6879.4%13.2%0.0%
Saturday6085.0%3.3%0.0%
Sunday6880.9%11.8%2.9%

Which airline was most reliable for LGA to ACK?

Among qualifying LGA-to-ACK airline results, Republic Airways had the highest on-time rate: 82.8% of 319 flights. JetBlue Airways was lowest at 81.0% across 100 flights.

AirlineFlightsOn time30+ minCancelled
Republic Airways31982.8%10.0%1.3%
JetBlue Airways10081.0%12.0%2.0%

Which month was most reliable for LGA to ACK?

Among qualifying LGA-to-ACK month results, August 2025 had the highest on-time rate: 89.7% of 126 flights. May 2026 was lowest at 68.2% across 22 flights.

MonthFlightsOn time30+ minCancelled
July 202513278.8%13.6%3.0%
August 202512689.7%4.8%0.0%
September 20253884.2%10.5%0.0%
May 20262268.2%22.7%0.0%
June 20269182.4%9.9%1.1%

What drove LGA to ACK delay minutes?

Late aircraft was the largest recorded LGA-to-ACK delay category, accounting for 41.6% of 4,182 BTS-attributed delay minutes during July 2025–June 2026.

Airline29.0%
Late aircraft41.6%
National airspace25.3%
Weather4.1%
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.