Charlotte Amalie (STT) to Miami (MIA): On-Time Performance
Data through July 2026
The calendar drives reliability on STT–MIA. May 2026 flights landed on schedule 94% of the time, but August 2024 dropped to 64% — a gap of 30 points. Across the full period the route averages 82% on-time against a national 78%.
- On-time
- 82%
- arrived <15 min late
- Avg delay
- 25 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 2.6
- last 12 months
- Duration
- 3h 9m
- scheduled
- Distance
- 1,107 mi
Monthly on-time trend
Best time to fly from STT to MIA
Aim for departures around 12 p.m. (88% on-time); avoid 3 p.m. departures (70%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 32 min |
| Tuesday | 85% | 18 min |
| Wednesdaybest | 87% | 26 min |
| Thursday | 85% | 18 min |
| Friday | 83% | 21 min |
| Saturday | 78% | 24 min |
| Sunday | 79% | 34 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft44%
- Airline operations46%
- National airspace system7%
- Weather3%
Frequently asked questions
- How often are flights from STT to MIA delayed?
- 18% of STT–MIA 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 25 minutes.
- What is the best time of day to fly from STT to MIA?
- Departures around 12 p.m. have the best record (88% on-time), while departures around 3 p.m. have the worst (70%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from STT to MIA?
- The scheduled STT–MIA flight time averages 3h 9m over 1,107 miles. Actual arrival times vary — flights on this route land 15+ minutes late 18% of the time.
- How often are STT to MIA flights cancelled?
- 0.6% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from STT to MIA?
- August 2024 was the roughest month in this dataset, with only 64% of arrivals on time. The best was May 2026 at 94%. If your dates are flexible, that 30-point gap is worth planning around.
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Based on 1,869 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.