Best Time to Fly PHX to STS: On-Time Stats by Hour & Airline
Phoenix Sky Harbor International → Charles M. Schulz - Sonoma County
Data through July 2026 · Last updated October 18, 2026
693 flights were scheduled from Phoenix (PHX) to Santa Rosa (STS) in the last 12 months, and 81.1% of those that flew arrived on time, 3.5 points above the US average of 77.6%.
Among 2 airlines, Envoy Air led with 85.3% on time and SkyWest Airlines was last with 73.8%.
Over 24 months, Saturday was the most reliable day (85% on time) and July the worst month (61%).
The cancellation rate was 0.3% (US average 1.8%).
PHX to STS 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 |
|---|---|---|---|---|
| Envoy Air | 85.3% | 36 min | 0.5% | 426 |
| SkyWest Airlines | 73.8% | 51 min | 0.0% | 261 |
| American Airlines | Limited data | 6 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PHX to STS
On-time arrival % by scheduled departure hour (local time), 1,278 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | Limited data | 1 | |
| 8am–9am | Limited data | 1 | |
| 10am–11am | 70.8% | 0.0% | 386 |
| 11am–12pm | 89.1% | 0.0% | 242 |
| 1pm–2pm | 84.7% | 0.2% | 464 |
| 2pm–3pm | 86.8% | 0.5% | 184 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PHX to STS
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 | 25 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 80.8% | -4.1 pts | 0.0% | 48 |
| Summer peak (Jun 15 - Aug 15) | 67.4% | -17.5 pts | 0.0% | 231 |
| All other days | 84.9% | — | 0.2% | 974 |
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).