Best Time to Fly STS to LAS: On-Time Stats by Hour & Airline
Charles M. Schulz - Sonoma County → Harry Reid International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 80.5% of Santa Rosa (STS) to Las Vegas (LAS) flights arrived on time (346 scheduled flights). That is 2.9 points above the national average of 77.6%.
Among 2 airlines, SkyWest Airlines led with 81.1% on time and Southwest Airlines was last with 79.3%.
Over 24 months, Saturday was the most reliable day (94% on time) and December the worst month (62%).
The cancellation rate was 0.6% (US average 1.8%).
STS 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 |
|---|---|---|---|---|
| SkyWest Airlines | 81.1% | 84 min | 0.9% | 230 |
| Southwest Airlines | 79.3% | 54 min | 0.0% | 116 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly STS to LAS
On-time arrival % by scheduled departure hour (local time), 547 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | 91.4% | 0.0% | 35 |
| 10am–11am | 76.9% | 1.6% | 123 |
| 11am–12pm | 76.7% | 0.0% | 120 |
| 12pm–1pm | 80.5% | 0.0% | 87 |
| 1pm–2pm | 89.4% | 0.0% | 66 |
| 2pm–3pm | 84.1% | 0.0% | 44 |
| 3pm–4pm | Limited data | 26 | |
| 4pm–5pm | 71.0% | 0.0% | 31 |
| 5pm–6pm | Limited data | 15 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on STS 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) | Limited data | 6 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 15 | ||
| Summer peak (Jun 15 - Aug 15) | 63.8% | -16.7 pts | 0.0% | 47 |
| All other days | 80.5% | — | 0.4% | 479 |
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).