Philadelphia (PHL) to Nantucket (ACK): On-Time Performance
Data through July 2026
Philadelphia (PHL) to Nantucket (ACK) is a thinner route than most in this dataset — 122 departures over the past year, roughly 2 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 81% arrived on time.
- On-time
- 81%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 2.5%
- Flights/day
- 0.33
- last 12 months
- Duration
- 1h 28m
- scheduled
- Distance
- 288 mi
Monthly on-time trend
Best time to fly from PHL to ACK
Aim for departures around 10 a.m. (88% on-time); avoid 2 p.m. departures (78%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 17 min |
| Tuesday | 81% | 11 min |
| Wednesdaybest | 100% | 1 min |
| Thursday | 82% | 20 min |
| Friday | 79% | 7 min |
| Saturday | 65% | 22 min |
| Sunday | 84% | 6 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft42%
- Airline operations12%
- National airspace system30%
- Weather17%
Frequently asked questions
- How often are flights from PHL to ACK delayed?
- 19% of PHL–ACK flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 12 minutes.
- What is the best time of day to fly from PHL to ACK?
- Departures around 10 a.m. have the best record (88% on-time), while departures around 2 p.m. have the worst (78%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PHL to ACK?
- The scheduled PHL–ACK flight time averages 1h 28m over 288 miles. Actual arrival times vary — flights on this route land 15+ minutes late 19% of the time.
- How often are PHL to ACK flights cancelled?
- 2.5% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What day of the week is most reliable for PHL to ACK?
- Wednesday flights have the best record at 100% on-time. Day-of-week differences on this route are meaningful — Saturday trails at 65%.
Explore related pages
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Other ways to fly to Nantucket (ACK)
Related guides
Based on 236 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.