Charlotte Amalie (STT) to Philadelphia (PHL): On-Time Performance
Data through July 2026
Charlotte Amalie (STT) to Philadelphia (PHL) 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, 74% arrived on time.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 27 min
- completed flights
- Cancelled
- 1.2%
- Flights/day
- 0.51
- last 12 months
- Duration
- 4h 19m
- scheduled
- Distance
- 1,605 mi
Monthly on-time trend
Best time to fly from STT to PHL
Aim for departures around 11 a.m. (81% on-time); avoid 2 p.m. departures (69%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 73% | 27 min |
| Tuesday | 70% | 35 min |
| Wednesday | 74% | 36 min |
| Thursday | 62% | 26 min |
| Friday | 76% | 39 min |
| Saturdaybest | 79% | 21 min |
| Sunday | 74% | 8 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft64%
- Airline operations29%
- National airspace system6%
- Weather1%
Frequently asked questions
- How often are flights from STT to PHL delayed?
- 26% of STT–PHL 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 27 minutes.
- What is the best time of day to fly from STT to PHL?
- Departures around 11 a.m. have the best record (81% on-time), while departures around 2 p.m. have the worst (69%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from STT to PHL?
- The scheduled STT–PHL flight time averages 4h 19m over 1,605 miles. Actual arrival times vary — flights on this route land 15+ minutes late 26% of the time.
- How often are STT to PHL flights cancelled?
- 1.2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What day of the week is most reliable for STT to PHL?
- Saturday flights have the best record at 79% on-time. Day-of-week differences on this route are meaningful — Thursday trails at 62%.
Explore related pages
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Related guides
Based on 341 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.