Best Time to Fly AUS to LAS: On-Time Stats by Hour & Airline
Austin - Bergstrom International → Harry Reid International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 73.3% of Austin (AUS) to Las Vegas (LAS) flights arrived on time (2,878 scheduled flights). That is 4.4 points below the national average of 77.6%.
Among 3 airlines, Southwest Airlines led with 74.5% on time and Frontier Airlines was last with 68.5%.
Over 24 months, Saturday was the most reliable day (85% on time) and June the worst month (62%).
The cancellation rate was 0.5% (US average 1.8%).
AUS to LAS 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 | 74.5% | 48 min | 0.3% | 2,195 |
| Delta Air Lines | 69.6% | 85 min | 0.8% | 365 |
| Frontier Airlines | 68.5% | 78 min | 1.0% | 295 |
| Allegiant Air | Limited data | 19 | ||
| Spirit Airlines | Limited data | 4 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly AUS to LAS
On-time arrival % by scheduled departure hour (local time), 5,947 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.5% | 0.6% | 357 |
| 6am–7am | 97.3% | 0.0% | 365 |
| 7am–8am | 97.0% | 1.0% | 100 |
| 8am–9am | 94.8% | 0.4% | 250 |
| 9am–10am | 92.6% | 0.0% | 217 |
| 10am–11am | 90.9% | 0.4% | 232 |
| 11am–12pm | 81.1% | 0.3% | 324 |
| 12pm–1pm | 82.9% | 0.0% | 310 |
| 1pm–2pm | 76.0% | 1.9% | 323 |
| 2pm–3pm | 76.1% | 0.0% | 383 |
| 3pm–4pm | 71.7% | 0.5% | 993 |
| 4pm–5pm | 61.1% | 0.6% | 340 |
| 5pm–6pm | 65.7% | 0.0% | 341 |
| 6pm–7pm | 69.5% | 0.0% | 266 |
| 7pm–8pm | 66.1% | 0.0% | 276 |
| 8pm–9pm | 63.4% | 0.5% | 405 |
| 9pm–10pm | 66.5% | 0.4% | 261 |
| 10pm–11pm | 63.6% | 0.5% | 199 |
| 11pm–12am | Limited data | 5 | |
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 LAS
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) | 82.7% | +4.0 pts | 0.0% | 104 |
| Christmas & New Year (Dec 20 - Jan 3) | 73.6% | -5.0 pts | 0.0% | 237 |
| Summer peak (Jun 15 - Aug 15) | 69.0% | -9.6 pts | 0.5% | 1,024 |
| All other days | 78.7% | — | 0.4% | 4,582 |
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).