Best Time to Fly CLE to IAH: On-Time Stats by Hour & Airline
Cleveland-Hopkins International → George Bush Intercontinental/Houston
Data through July 2026 · Last updated October 18, 2026
824 flights were scheduled from Cleveland (CLE) to Houston (IAH) in the last 12 months, and 90.8% of those that flew arrived on time, 13.1 points above the US average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Wednesday was the most reliable day (92% on time) and June the worst month (83%).
The cancellation rate was 0.0% (US average 1.8%).
CLE 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 | 90.8% | 65 min | 0.0% | 824 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly CLE to IAH
On-time arrival % by scheduled departure hour (local time), 1,977 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 93.0% | 0.7% | 735 |
| 7am–8am | Limited data | 8 | |
| 8am–9am | Limited data | 7 | |
| 12pm–1pm | Limited data | 5 | |
| 1pm–2pm | 97.1% | 0.0% | 34 |
| 2pm–3pm | 88.5% | 0.0% | 383 |
| 3pm–4pm | 88.0% | 0.0% | 293 |
| 4pm–5pm | 84.9% | 1.0% | 194 |
| 5pm–6pm | 92.7% | 0.0% | 68 |
| 6pm–7pm | 82.0% | 0.0% | 250 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on CLE 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) | 89.2% | -0.7 pts | 0.0% | 37 |
| Christmas & New Year (Dec 20 - Jan 3) | 88.6% | -1.3 pts | 0.0% | 70 |
| Summer peak (Jun 15 - Aug 15) | 86.2% | -3.7 pts | 0.3% | 378 |
| All other days | 89.9% | — | 0.4% | 1,492 |
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).