Best Time to Fly AUS to DEN: On-Time Stats by Hour & Airline
Austin - Bergstrom International → Denver International
Data through July 2026 · Last updated October 18, 2026
5,416 flights were scheduled from Austin (AUS) to Denver (DEN) in the last 12 months, and 79.0% of those that flew arrived on time, 1.4 points above the US average of 77.6%.
United Airlines was the most punctual of the 4 airlines on the route at 84.6%, while Southwest Airlines trailed at 73.2%.
September has been the best month (86% on time) and Sunday the weakest day of the week (78%).
0.7% of flights were cancelled, versus 1.8% nationally.
AUS to DEN 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 | 84.6% | 70 min | 0.8% | 1,899 |
| Frontier Airlines | 84.0% | 73 min | 0.5% | 580 |
| SkyWest Airlines | 80.2% | 74 min | 0.5% | 552 |
| Southwest Airlines | 73.2% | 53 min | 0.6% | 2,385 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly AUS to DEN
On-time arrival % by scheduled departure hour (local time), 10,197 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.3% | 0.3% | 709 |
| 6am–7am | 90.8% | 0.5% | 655 |
| 7am–8am | 93.1% | 0.2% | 539 |
| 8am–9am | 85.0% | 0.8% | 773 |
| 9am–10am | 88.7% | 0.2% | 460 |
| 10am–11am | 88.8% | 1.0% | 686 |
| 11am–12pm | 88.1% | 0.7% | 764 |
| 12pm–1pm | 88.7% | 0.5% | 919 |
| 1pm–2pm | 82.2% | 0.2% | 401 |
| 2pm–3pm | 74.1% | 0.7% | 570 |
| 3pm–4pm | 70.6% | 0.5% | 381 |
| 4pm–5pm | 68.8% | 0.7% | 822 |
| 5pm–6pm | 61.7% | 0.4% | 502 |
| 6pm–7pm | 62.1% | 0.7% | 1,005 |
| 7pm–8pm | 60.6% | 1.1% | 367 |
| 8pm–9pm | 68.5% | 2.0% | 399 |
| 9pm–10pm | 70.8% | 0.0% | 168 |
| 10pm–11pm | 70.1% | 0.0% | 77 |
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 DEN
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% | -1.9 pts | 0.0% | 207 |
| Christmas & New Year (Dec 20 - Jan 3) | 81.9% | +0.7 pts | 0.0% | 425 |
| Summer peak (Jun 15 - Aug 15) | 72.8% | -8.3 pts | 1.2% | 1,886 |
| All other days | 81.2% | — | 0.5% | 7,679 |
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).