Best Time to Fly HOU to AUS: On-Time Stats by Hour & Airline
William P Hobby → Austin - Bergstrom International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 74.9% of Houston (HOU) to Austin (AUS) flights arrived on time (1,362 scheduled flights). That is 2.7 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
January has been the best month (90% on time) and Sunday the weakest day of the week (70%).
0.4% of flights were cancelled, versus 1.8% nationally.
HOU 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 |
|---|---|---|---|---|
| Southwest Airlines | 74.9% | 49 min | 0.4% | 1,362 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly HOU to AUS
On-time arrival % by scheduled departure hour (local time), 2,807 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 1 | |
| 7am–8am | 93.6% | 0.0% | 110 |
| 8am–9am | 93.5% | 0.3% | 325 |
| 9am–10am | 90.5% | 1.1% | 191 |
| 10am–11am | 85.5% | 0.4% | 257 |
| 11am–12pm | 85.5% | 1.0% | 195 |
| 12pm–1pm | 68.8% | 0.0% | 61 |
| 1pm–2pm | 78.0% | 1.1% | 185 |
| 2pm–3pm | 70.5% | 0.6% | 174 |
| 3pm–4pm | 65.8% | 0.0% | 152 |
| 4pm–5pm | 62.9% | 0.0% | 117 |
| 5pm–6pm | 72.9% | 0.0% | 48 |
| 6pm–7pm | 74.8% | 1.0% | 100 |
| 7pm–8pm | 80.0% | 0.0% | 65 |
| 8pm–9pm | 71.5% | 0.9% | 340 |
| 9pm–10pm | 70.0% | 1.0% | 205 |
| 10pm–11pm | 62.3% | 0.0% | 281 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on HOU 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) | 79.2% | -0.6 pts | 0.0% | 48 |
| Christmas & New Year (Dec 20 - Jan 3) | 74.0% | -5.7 pts | 0.0% | 104 |
| Summer peak (Jun 15 - Aug 15) | 66.9% | -12.9 pts | 0.2% | 463 |
| All other days | 79.8% | — | 0.6% | 2,192 |
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).