Best Time to Fly CLT to IAH: On-Time Stats by Hour & Airline
Charlotte Douglas International → George Bush Intercontinental/Houston
Data through July 2026 · Last updated October 18, 2026
2,327 flights were scheduled from Charlotte (CLT) to Houston (IAH) in the last 12 months, and 78.2% of those that flew arrived on time, 0.6 points above the US average of 77.6%.
Among 4 airlines, United Airlines led with 89.1% on time and Frontier Airlines was last with 72.4%.
Over 24 months, Tuesday was the most reliable day (84% on time) and July the worst month (62%).
The cancellation rate was 1.8% (US average 1.8%).
CLT to IAH on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| United Airlines | 89.1% | 97 min | 1.1% | 363 |
| American Airlines | 76.8% | 71 min | 1.6% | 1,614 |
| SkyWest Airlines | 75.2% | 69 min | 1.8% | 111 |
| Frontier Airlines | 72.4% | 84 min | 4.6% | 239 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly CLT to IAH
On-time arrival % by scheduled departure hour (local time), 4,966 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 88.3% | 1.4% | 416 |
| 7am–8am | 88.5% | 1.3% | 837 |
| 8am–9am | 91.3% | 2.0% | 153 |
| 9am–10am | 89.4% | 0.0% | 85 |
| 10am–11am | 81.2% | 1.4% | 70 |
| 11am–12pm | 80.4% | 1.2% | 333 |
| 12pm–1pm | 79.9% | 0.3% | 376 |
| 1pm–2pm | 89.2% | 0.0% | 74 |
| 2pm–3pm | 77.5% | 1.1% | 287 |
| 3pm–4pm | 65.5% | 2.2% | 447 |
| 4pm–5pm | 73.0% | 2.2% | 183 |
| 5pm–6pm | 65.9% | 1.1% | 365 |
| 6pm–7pm | 64.5% | 2.3% | 653 |
| 7pm–8pm | 52.4% | 3.1% | 65 |
| 8pm–9pm | 65.2% | 2.7% | 370 |
| 9pm–10pm | 64.9% | 1.3% | 75 |
| 10pm–11pm | 67.7% | 7.9% | 177 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on CLT to IAH
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 69.6% | -9.0 pts | 0.0% | 92 |
| Christmas & New Year (Dec 20 - Jan 3) | 84.7% | +6.1 pts | 1.2% | 165 |
| Summer peak (Jun 15 - Aug 15) | 63.0% | -15.5 pts | 2.5% | 857 |
| All other days | 78.6% | — | 1.7% | 3,852 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).