Charlotte Amalie (STT) to Houston (IAH): On-Time Performance
Data through May 2026
Charlotte Amalie (STT) to Houston (IAH) is a thinner route than most in this dataset — 173 departures over the past year, roughly 3 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
- 10 min
- completed flights
- Cancelled
- 1.9%
- Flights/day
- 0.47
- last 12 months
- Duration
- 5h 12m
- scheduled
- Distance
- 2,070 mi
Monthly on-time trend
Best time to fly from STT to IAH
Aim for departures around 3 p.m. (86% on-time); avoid 2 p.m. departures (76%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 67% | 14 min |
| Tuesdaybest | 87% | 4 min |
| Wednesday | 73% | 16 min |
| Thursday | 85% | 17 min |
| Friday | 84% | 9 min |
| Saturday | 82% | 10 min |
| Sunday | 86% | 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 aircraft45%
- Airline operations11%
- National airspace system44%
Frequently asked questions
- How often are flights from STT to IAH delayed?
- 19% of STT–IAH 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 10 minutes.
- What is the best time of day to fly from STT to IAH?
- Departures around 3 p.m. have the best record (86% on-time), while departures around 2 p.m. have the worst (76%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from STT to IAH?
- The scheduled STT–IAH flight time averages 5h 12m over 2,070 miles. Actual arrival times vary — flights on this route land 15+ minutes late 19% of the time.
- How often are STT to IAH flights cancelled?
- 1.9% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What day of the week is most reliable for STT to IAH?
- Tuesday flights have the best record at 87% on-time. Day-of-week differences on this route are meaningful — Monday trails at 67%.
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Based on 313 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.