Charlotte (CLT) to Houston (IAH): On-Time Performance
Data through July 2026
Charlotte (CLT) to Houston (IAH) effectively runs on two schedules. In September 2025, 90% of arrivals were on time; in July 2024 that fell to 50% — a 39-point seasonal swing. Across the full period the route averages 75% on-time against a national 78%. Morning departures also hold up better than evening ones (86% vs 63%), which matters most in the rough months.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 20 min
- completed flights
- Cancelled
- 2.2%
- Flights/day
- 6.4
- last 12 months
- Duration
- 2h 49m
- scheduled
- Distance
- 912 mi
Best airline from CLT to IAH
5 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 80% | 19 min | 1.6% | 1,111 |
| Spirit Airlines | 75% | 16 min | 2.8% | 108 |
| SkyWest Airlines | 75% | 18 min | 1.7% | 116 |
| American Airlines | 74% | 20 min | 2.1% | 3,493 |
| Frontier Airlines | 65% | 25 min | 4.1% | 395 |
Monthly on-time trend
Best time to fly from CLT to IAH
Aim for departures around 8 a.m. (91% on-time); avoid 7 p.m. departures (43%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 73% | 21 min |
| Tuesdaybest | 82% | 13 min |
| Wednesday | 80% | 17 min |
| Thursday | 73% | 20 min |
| Friday | 70% | 23 min |
| Saturday | 74% | 21 min |
| Sunday | 72% | 23 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 operations28%
- National airspace system21%
- Weather7%
Frequently asked questions
- How often are flights from CLT to IAH delayed?
- 25% of CLT–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 20 minutes.
- Which airline is most reliable from CLT to IAH?
- United Airlines has the best on-time record on this route at 80%, based on 1,111 flights. 5 airlines flew CLT–IAH frequently enough to compare in this period.
- What is the best time of day to fly from CLT to IAH?
- Departures around 8 a.m. have the best record (91% on-time), while departures around 7 p.m. have the worst (43%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from CLT to IAH?
- The scheduled CLT–IAH flight time averages 2h 49m over 912 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are CLT to IAH flights cancelled?
- 2.2% 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 CLT to IAH?
- July 2024 was the roughest month in this dataset, with only 50% of arrivals on time. The best was September 2025 at 90%. If your dates are flexible, that 39-point gap is worth planning around.
Explore related pages
More routes from CLT
Other ways to fly to Houston (IAH)
Related guides
Based on 5,224 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.