Houston (IAH) to Charlotte Amalie (STT): On-Time Performance
Data through May 2026
Houston (IAH) to Charlotte Amalie (STT) 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
- 1.3%
- Flights/day
- 0.47
- last 12 months
- Duration
- 4h 48m
- scheduled
- Distance
- 2,070 mi
Monthly on-time trend
Best time to fly from IAH to STT
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 93% | 4 min |
| Tuesday | 80% | 10 min |
| Wednesday | 77% | 18 min |
| Thursday | 73% | 15 min |
| Friday | 76% | 16 min |
| Saturday | 81% | 8 min |
| Sunday | 88% | 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 aircraft18%
- Airline operations27%
- National airspace system42%
- Weather14%
Frequently asked questions
- How often are flights from IAH to STT delayed?
- 19% of IAH–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 10 minutes.
- How long is the flight from IAH to STT?
- The scheduled IAH–STT flight time averages 4h 48m over 2,070 miles. Actual arrival times vary — flights on this route land 15+ minutes late 19% of the time.
- How often are IAH to STT flights cancelled?
- 1.3% 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 IAH to STT?
- Monday flights have the best record at 93% on-time. Day-of-week differences on this route are meaningful — Thursday trails at 73%.
Explore related pages
More routes from IAH
Based on 315 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.