Best Time to Fly IAH to CLE: On-Time Stats by Hour & Airline
George Bush Intercontinental/Houston → Cleveland-Hopkins International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 84.8% of Houston (IAH) to Cleveland (CLE) flights arrived on time (825 scheduled flights). That is 7.2 points above the national 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 (89% on time) and June the worst month (74%).
The cancellation rate was 0.2% (US average 1.8%).
IAH to CLE 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 | 84.8% | 53 min | 0.2% | 825 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAH to CLE
On-time arrival % by scheduled departure hour (local time), 1,979 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 92.6% | 0.0% | 701 |
| 8am–9am | Limited data | 2 | |
| 9am–10am | Limited data | 6 | |
| 10am–11am | Limited data | 2 | |
| 11am–12pm | Limited data | 13 | |
| 12pm–1pm | 87.7% | 0.0% | 65 |
| 1pm–2pm | Limited data | 18 | |
| 2pm–3pm | 80.4% | 0.0% | 225 |
| 3pm–4pm | 91.7% | 2.0% | 49 |
| 4pm–5pm | 79.7% | 1.1% | 174 |
| 5pm–6pm | Limited data | 2 | |
| 6pm–7pm | 79.2% | 0.9% | 660 |
| 7pm–8pm | 72.4% | 4.8% | 62 |
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 CLE
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) | 100.0% | +13.3 pts | 0.0% | 38 |
| Christmas & New Year (Dec 20 - Jan 3) | 70.0% | -16.7 pts | 0.0% | 70 |
| Summer peak (Jun 15 - Aug 15) | 77.8% | -8.9 pts | 0.8% | 378 |
| All other days | 86.7% | — | 0.6% | 1,493 |
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).