Philadelphia (PHL) to Charlotte Amalie (STT): On-Time Performance
Data through May 2026
Philadelphia (PHL) to Charlotte Amalie (STT) is a thinner route than most in this dataset — 187 departures over the past year, roughly 4 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 77% arrived on time.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 1.2%
- Flights/day
- 0.51
- last 12 months
- Duration
- 3h 59m
- scheduled
- Distance
- 1,605 mi
Monthly on-time trend
Best time to fly from PHL to STT
Aim for departures around 8 a.m. (79% on-time); avoid 9 a.m. departures (65%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 83% | 20 min |
| Tuesday | 75% | 14 min |
| Wednesday | 83% | 19 min |
| Thursday | 68% | 17 min |
| Fridaybest | 91% | 6 min |
| Saturday | 72% | 14 min |
| Sunday | 78% | 14 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft47%
- Airline operations22%
- National airspace system29%
- Weather3%
Frequently asked questions
- How often are flights from PHL to STT delayed?
- 23% of PHL–STT 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 14 minutes.
- What is the best time of day to fly from PHL to STT?
- Departures around 8 a.m. have the best record (79% on-time), while departures around 9 a.m. have the worst (65%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PHL to STT?
- The scheduled PHL–STT flight time averages 3h 59m over 1,605 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are PHL to STT flights cancelled?
- 1.2% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What day of the week is most reliable for PHL to STT?
- Friday flights have the best record at 91% on-time. Day-of-week differences on this route are meaningful — Thursday trails at 68%.
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Based on 338 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.