Best Time to Fly LAS to SAT: On-Time Stats by Hour & Airline
Harry Reid International → San Antonio International
Data through July 2026 · Last updated October 18, 2026
2,024 flights were scheduled from Las Vegas (LAS) to San Antonio (SAT) in the last 12 months, and 74.7% of those that flew arrived on time, 2.9 points below the US average of 77.6%.
Among 3 airlines, Spirit Airlines led with 82.9% on time and Southwest Airlines was last with 72.4%.
Over 24 months, Saturday was the most reliable day (85% on time) and July the worst month (66%).
The cancellation rate was 0.3% (US average 1.8%).
LAS to SAT 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 |
|---|---|---|---|---|
| Spirit Airlines | 82.9% | 105 min | 0.6% | 182 |
| Frontier Airlines | 81.9% | 64 min | 0.7% | 290 |
| Southwest Airlines | 72.4% | 47 min | 0.2% | 1,552 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LAS to SAT
On-time arrival % by scheduled departure hour (local time), 4,345 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | 78.2% | 0.0% | 156 |
| 1am–2am | Limited data | 5 | |
| 5am–6am | 97.7% | 0.0% | 44 |
| 6am–7am | 95.2% | 0.6% | 340 |
| 7am–8am | 93.9% | 0.0% | 377 |
| 8am–9am | 90.7% | 0.0% | 366 |
| 9am–10am | 81.9% | 0.8% | 267 |
| 10am–11am | 83.8% | 0.0% | 272 |
| 11am–12pm | 85.2% | 0.0% | 176 |
| 12pm–1pm | 82.5% | 0.8% | 236 |
| 1pm–2pm | 78.2% | 0.0% | 216 |
| 2pm–3pm | 67.6% | 0.5% | 224 |
| 3pm–4pm | 62.2% | 0.5% | 404 |
| 4pm–5pm | 60.0% | 1.2% | 172 |
| 5pm–6pm | 66.4% | 0.0% | 263 |
| 6pm–7pm | 71.8% | 0.3% | 310 |
| 7pm–8pm | 59.8% | 0.4% | 248 |
| 8pm–9pm | 60.6% | 1.5% | 130 |
| 9pm–10pm | 57.4% | 2.9% | 70 |
| 11pm–12am | 91.0% | 2.9% | 69 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on LAS to SAT
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) | 91.3% | +12.5 pts | 0.0% | 92 |
| Christmas & New Year (Dec 20 - Jan 3) | 77.0% | -1.8 pts | 0.0% | 187 |
| Summer peak (Jun 15 - Aug 15) | 70.1% | -8.7 pts | 0.4% | 688 |
| All other days | 78.8% | — | 0.5% | 3,378 |
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).