Historical on-time performance
Nantucket to New York
Flights on ACK–JFK arrive on time 63% of the time over the last 12 months.
based on 278 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- JetBlue AirwaysOn-time66%Medianon timep90105 minCancel3.8%Flights186
- Republic AirwaysOn-time55%Medianon timep9090 minCancel8.7%Flights92
Why flights run late
Delay causes
- Airline34%
- Weather4%
- Air traffic (NAS)48%
- Late aircraft15%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline7%
- Weather33%
- Air traffic (NAS)60%
- Security0%
Most cancellations here are attributed to Air traffic (NAS). Shares are among 15 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ACK → JFK
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Middays are the most reliable time of day to fly this route — 73% on time.
- Middays73% on time · p90 95 min · 444 flights
- Evenings62% on time · p90 135 min · 233 flights
- Afternoons59% on time · p90 100 min · 403 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 56% to 71% on time.
- Tuesdays71% on time · p90 70 min · 145 flights · limited
- Saturdays67% on time · p90 140 min · 169 flights · limited
- Fridays66% on time · p90 105 min · 158 flights · limited
- Thursdays66% on time · p90 115 min · 157 flights · limited
- Wednesdays66% on time · p90 55 min · 142 flights · limited
- Mondays64% on time · p90 100 min · 153 flights · limited
- Sundays56% on time · p90 140 min · 156 flights · limited
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