Charleston (CHS) to Houston (IAH): On-Time Performance
Data through July 2026
Charleston (CHS) to Houston (IAH) is a thinner route than most in this dataset — 211 departures over the past year, roughly 4 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 82% arrived on time.
- On-time
- 82%
- arrived <15 min late
- Avg delay
- 17 min
- completed flights
- Cancelled
- 2.3%
- Flights/day
- 0.58
- last 12 months
- Duration
- 2h 46m
- scheduled
- Distance
- 925 mi
Monthly on-time trend
Best time to fly from CHS to IAH
Aim for departures around 7 a.m. (89% on-time); avoid 5 p.m. departures (72%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 84% | 17 min |
| Tuesday | 83% | 12 min |
| Wednesday | 82% | 13 min |
| Thursday | 78% | 20 min |
| Friday | 80% | 15 min |
| Saturday | 81% | 36 min |
| Sunday | 83% | 14 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft30%
- Airline operations40%
- National airspace system22%
- Weather8%
Frequently asked questions
- How often are flights from CHS to IAH delayed?
- 18% of CHS–IAH 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 17 minutes.
- What is the best time of day to fly from CHS to IAH?
- Departures around 7 a.m. have the best record (89% on-time), while departures around 5 p.m. have the worst (72%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from CHS to IAH?
- The scheduled CHS–IAH flight time averages 2h 46m over 925 miles. Actual arrival times vary — flights on this route land 15+ minutes late 18% of the time.
- How often are CHS to IAH flights cancelled?
- 2.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from CHS to IAH?
- April 2025 was the roughest month in this dataset, with only 64% of arrivals on time. The best was September 2024 at 92%. If your dates are flexible, that 28-point gap is worth planning around.
Explore related pages
More routes from CHS
Other ways to fly to Houston (IAH)
Related guides
Based on 512 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.