Historical on-time performance
Philadelphia to Nantucket
288 miData through Dec 2025Source: US DOT · BTS
Flights on PHL–ACK arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 67 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysOn-time78%Medianon timep9065 minCancel0.0%Flights67
Why flights run late
Delay causes
- Airline14%
- Weather24%
- Air traffic (NAS)20%
- Late aircraft42%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly PHL → ACK
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 77% to 80% on time.
- Afternoons80% on time · p90 30 min · 146 flights · limited
- Middays77% on time · p90 30 min · 87 flights · limited
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