Best Time to Fly IAH to AUS: On-Time Stats by Hour & Airline
George Bush Intercontinental/Houston → Austin - Bergstrom International
Data through July 2026 · Last updated October 18, 2026
2,696 flights were scheduled from Houston (IAH) to Austin (AUS) in the last 12 months, and 79.6% of those that flew arrived on time, 2.0 points above the US average of 77.6%.
SkyWest Airlines was the most punctual of the 2 airlines on the route at 87.2%, while United Airlines trailed at 79.5%.
February has been the best month (87% on time) and Sunday the weakest day of the week (74%).
0.7% of flights were cancelled, versus 1.8% nationally.
IAH to AUS 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% | 67 min | 0.0% | 39 |
| United Airlines | 79.5% | 63 min | 0.8% | 2,657 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAH to AUS
On-time arrival % by scheduled departure hour (local time), 5,187 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 91.7% | 0.9% | 693 |
| 8am–9am | Limited data | 1 | |
| 9am–10am | 87.3% | 1.2% | 160 |
| 10am–11am | 81.8% | 0.3% | 353 |
| 11am–12pm | 78.2% | 0.0% | 147 |
| 12pm–1pm | 81.1% | 1.0% | 507 |
| 2pm–3pm | 78.6% | 0.8% | 614 |
| 3pm–4pm | Limited data | 1 | |
| 4pm–5pm | 67.0% | 0.6% | 621 |
| 5pm–6pm | 80.0% | 0.0% | 40 |
| 6pm–7pm | 72.9% | 1.0% | 683 |
| 7pm–8pm | 65.9% | 2.2% | 45 |
| 8pm–9pm | 71.7% | 0.9% | 678 |
| 9pm–10pm | 82.7% | 1.1% | 280 |
| 10pm–11pm | 77.9% | 1.9% | 360 |
| 11pm–12am | Limited data | 4 | |
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 AUS
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) | 74.8% | -5.5 pts | 0.0% | 103 |
| Christmas & New Year (Dec 20 - Jan 3) | 71.3% | -8.9 pts | 1.2% | 173 |
| Summer peak (Jun 15 - Aug 15) | 68.7% | -11.6 pts | 0.8% | 799 |
| All other days | 80.3% | — | 0.9% | 4,112 |
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).