Best Time to Fly IAH to CLT: On-Time Stats by Hour & Airline
George Bush Intercontinental/Houston → Charlotte Douglas International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 80.7% of Houston (IAH) to Charlotte (CLT) flights arrived on time (2,326 scheduled flights). That is 3.1 points above the national average of 77.6%.
Among 4 airlines, American Airlines led with 83.4% on time and Frontier Airlines was last with 70.0%.
Over 24 months, Wednesday was the most reliable day (84% on time) and July the worst month (70%).
The cancellation rate was 1.9% (US average 1.8%).
IAH to CLT 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 |
|---|---|---|---|---|
| American Airlines | 83.4% | 137 min | 1.7% | 1,612 |
| SkyWest Airlines | 77.1% | 54 min | 1.8% | 111 |
| United Airlines | 76.9% | 54 min | 1.1% | 363 |
| Frontier Airlines | 70.0% | 58 min | 4.2% | 240 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAH to CLT
On-time arrival % by scheduled departure hour (local time), 4,964 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 10 | |
| 6am–7am | 90.5% | 3.2% | 655 |
| 7am–8am | 84.3% | 2.9% | 348 |
| 8am–9am | 87.6% | 3.1% | 350 |
| 9am–10am | 87.5% | 1.1% | 382 |
| 10am–11am | 84.1% | 0.9% | 342 |
| 11am–12pm | 91.8% | 3.5% | 114 |
| 12pm–1pm | 80.3% | 0.4% | 535 |
| 1pm–2pm | 63.1% | 1.2% | 171 |
| 2pm–3pm | 83.6% | 1.0% | 290 |
| 3pm–4pm | 72.3% | 0.9% | 233 |
| 4pm–5pm | 66.9% | 2.1% | 143 |
| 5pm–6pm | 66.2% | 2.7% | 367 |
| 6pm–7pm | 71.9% | 2.0% | 1,022 |
| 7pm–8pm | Limited data | 2 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IAH to CLT
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) | 87.0% | +5.6 pts | 0.0% | 92 |
| Christmas & New Year (Dec 20 - Jan 3) | 80.4% | -1.0 pts | 1.2% | 165 |
| Summer peak (Jun 15 - Aug 15) | 70.2% | -11.2 pts | 2.9% | 855 |
| All other days | 81.4% | — | 1.8% | 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).