FlightRecord

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

Monthly on-time percentage for STT to IAH flights50%75%100%June 2024: 83% on-time (29 flights)83Jun 2024July 2024: 79% on-time (30 flights)79August 2024: 90% on-time (20 flights)90September 2024: 100% on-time (4 flights)100Sep 2024October 2024: 100% on-time (5 flights)100November 2024: 100% on-time (9 flights)100December 2024: 89% on-time (9 flights)89Dec 2024January 2025: 75% on-time (5 flights)75February 2025: 50% on-time (4 flights)50March 2025: 100% on-time (8 flights)100Mar 2025April 2025: 100% on-time (4 flights)100May 2025: 69% on-time (13 flights)69June 2025: 63% on-time (30 flights)63Jun 2025July 2025: 87% on-time (31 flights)87August 2025: 81% on-time (18 flights)81September 2025: 100% on-time (1 flights)100Sep 2025October 2025: 100% on-time (5 flights)100November 2025: 100% on-time (10 flights)100December 2025: 100% on-time (8 flights)100Dec 2025January 2026: 80% on-time (6 flights)80February 2026: 75% on-time (4 flights)75March 2026: 58% on-time (24 flights)58Mar 2026April 2026: 60% on-time (5 flights)60May 2026: 87% on-time (31 flights)87

Best time to fly from STT to IAH

Aim for departures around 3 p.m. (86% on-time); avoid 2 p.m. departures (76%).

On-time percentage by scheduled departure hour, STT to IAH1 p.m.: 81% on-time (192 flights)132 p.m.: 76% on-time (51 flights)143 p.m.: 86% on-time (30 flights)154 p.m.: 79% on-time (25 flights)16scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday67%14 min
Tuesdaybest87%4 min
Wednesday73%16 min
Thursday85%17 min
Friday84%9 min
Saturday82%10 min
Sunday86%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%.

Based on 313 flights, 2024-062026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.