Phoenix (PHX) to Santa Rosa (STS): On-Time Performance
Data through July 2026
When you fly PHX to STS matters as much as anything else about the booking: the route swung from 97% on-time in September 2024 to just 57% in June 2026. Across the full period the route averages 82% on-time against a national 78%.
- On-time
- 82%
- arrived <15 min late
- Avg delay
- 10 min
- completed flights
- Cancelled
- 0.2%
- Flights/day
- 1.9
- last 12 months
- Duration
- 2h 16m
- scheduled
- Distance
- 699 mi
Best airline from PHX to STS
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 86% | 6 min | 0.3% | 696 |
| American Airlines | 78% | 16 min | 0.0% | 167 |
| SkyWest Airlines | 75% | 14 min | 0.0% | 446 |
Monthly on-time trend
Best time to fly from PHX to STS
Aim for departures around 11 a.m. (88% on-time); avoid 10 a.m. departures (70%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 14 min |
| Tuesday | 84% | 10 min |
| Wednesday | 84% | 7 min |
| Thursday | 83% | 9 min |
| Friday | 82% | 11 min |
| Saturdaybest | 85% | 8 min |
| Sunday | 77% | 12 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft35%
- Airline operations46%
- National airspace system18%
- Weather2%
Frequently asked questions
- How often are flights from PHX to STS delayed?
- 19% of PHX–STS flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 10 minutes.
- Which airline is most reliable from PHX to STS?
- Envoy Air has the best on-time record on this route at 86%, based on 696 flights. 3 airlines flew PHX–STS frequently enough to compare in this period.
- What is the best time of day to fly from PHX to STS?
- Departures around 11 a.m. have the best record (88% on-time), while departures around 10 a.m. have the worst (70%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PHX to STS?
- The scheduled PHX–STS flight time averages 2h 16m over 699 miles. Actual arrival times vary — flights on this route land 15+ minutes late 19% of the time.
- How often are PHX to STS flights cancelled?
- 0.2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from PHX to STS?
- June 2026 was the roughest month in this dataset, with only 57% of arrivals on time. The best was September 2024 at 97%. If your dates are flexible, that 40-point gap is worth planning around.
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Based on 1,309 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.