Philadelphia (PHL) to Nantucket (ACK): On-Time Performance
Data through May 2026
Philadelphia (PHL) to Nantucket (ACK) is a thinner route than most in this dataset — 83 departures over the past year, roughly 2 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 82% arrived on time.
- On-time
- 82%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 2.5%
- Flights/day
- 0.23
- last 12 months
- Duration
- 1h 25m
- scheduled
- Distance
- 288 mi
Monthly on-time trend
Best time to fly from PHL to ACK
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 86% | 7 min |
| Tuesday | 82% | 15 min |
| Wednesdaybest | 100% | 2 min |
| Thursday | 86% | 20 min |
| Friday | 68% | 10 min |
| Saturday | 77% | 18 min |
| Sunday | 78% | 7 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft38%
- Airline operations16%
- National airspace system28%
- Weather19%
Frequently asked questions
- How often are flights from PHL to ACK delayed?
- 18% of PHL–ACK flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 11 minutes.
- How long is the flight from PHL to ACK?
- The scheduled PHL–ACK flight time averages 1h 25m over 288 miles. Actual arrival times vary — flights on this route land 15+ minutes late 18% of the time.
- How often are PHL to ACK flights cancelled?
- 2.5% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
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Based on 158 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.