Best Time to Fly AUS to IAH: On-Time Stats by Hour & Airline
Austin - Bergstrom International → George Bush Intercontinental/Houston
Data through July 2026 · Last updated October 18, 2026
2,695 flights were scheduled from Austin (AUS) to Houston (IAH) in the last 12 months, and 75.9% of those that flew arrived on time, 1.7 points below the US average of 77.6%.
Among 2 airlines, SkyWest Airlines led with 87.2% on time and United Airlines was last with 75.8%.
Over 24 months, Saturday was the most reliable day (83% on time) and June the worst month (69%).
The cancellation rate was 1.1% (US average 1.8%).
AUS 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 |
|---|---|---|---|---|
| SkyWest Airlines | 87.2% | 54 min | 0.0% | 39 |
| United Airlines | 75.8% | 58 min | 1.2% | 2,656 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly AUS to IAH
On-time arrival % by scheduled departure hour (local time), 5,185 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.9% | 1.5% | 682 |
| 6am–7am | Limited data | 3 | |
| 7am–8am | 72.9% | 1.5% | 728 |
| 9am–10am | 81.4% | 1.8% | 708 |
| 10am–11am | Limited data | 1 | |
| 11am–12pm | 89.1% | 0.0% | 64 |
| 12pm–1pm | 75.7% | 0.9% | 448 |
| 1pm–2pm | 77.1% | 0.0% | 35 |
| 2pm–3pm | 81.3% | 1.0% | 620 |
| 3pm–4pm | Limited data | 1 | |
| 4pm–5pm | 68.4% | 1.1% | 614 |
| 5pm–6pm | 67.9% | 1.3% | 456 |
| 6pm–7pm | 65.5% | 1.2% | 253 |
| 7pm–8pm | 83.6% | 0.7% | 570 |
| 9pm–10pm | 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 AUS 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) | 82.5% | +3.6 pts | 0.0% | 103 |
| Christmas & New Year (Dec 20 - Jan 3) | 85.9% | +6.9 pts | 1.7% | 173 |
| Summer peak (Jun 15 - Aug 15) | 72.9% | -6.0 pts | 1.1% | 798 |
| All other days | 78.9% | — | 1.3% | 4,111 |
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).