Best Time to Fly TUS to IAH: On-Time Stats by Hour & Airline
Tucson International → George Bush Intercontinental/Houston
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 92.1% of Tucson (TUS) to Houston (IAH) flights arrived on time (206 scheduled flights). That is 14.5 points above the national average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
October has been the best month (96% on time) and Sunday the weakest day of the week (86%).
1.9% of flights were cancelled, versus 1.8% nationally.
TUS 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 | 91.7% | 34 min | 2.0% | 197 |
| SkyWest Airlines | Limited data | 9 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly TUS to IAH
On-time arrival % by scheduled departure hour (local time), 702 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 93.4% | 1.4% | 278 |
| 7am–8am | 91.4% | 1.9% | 154 |
| 11am–12pm | 84.1% | 0.0% | 63 |
| 12pm–1pm | 86.2% | 1.1% | 88 |
| 1pm–2pm | 85.5% | 1.7% | 119 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on TUS 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) | Limited data | 6 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 15 | ||
| Summer peak (Jun 15 - Aug 15) | Limited data | 28 | ||
| All other days | 89.9% | — | 1.5% | 653 |
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).