Los Angeles (LAX) to Santa Rosa (STS): On-Time Performance
Data through July 2026
Los Angeles (LAX) to Santa Rosa (STS) effectively runs on two schedules. In September 2025, 95% of arrivals were on time; in December 2025 that fell to 60% — a 35-point seasonal swing. Across the full period the route averages 84% on-time against a national 78%.
- On-time
- 84%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 1.4%
- Flights/day
- 2.0
- last 12 months
- Duration
- 1h 43m
- scheduled
- Distance
- 399 mi
Monthly on-time trend
Best time to fly from LAX to STS
Aim for departures around 7 p.m. (91% on-time); avoid 9 p.m. departures (72%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 81% | 11 min |
| Tuesday | 87% | 8 min |
| Wednesdaybest | 89% | 6 min |
| Thursday | 82% | 15 min |
| Friday | 83% | 15 min |
| Saturday | 88% | 7 min |
| Sunday | 81% | 10 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft39%
- Airline operations40%
- National airspace system11%
- Weather10%
Frequently asked questions
- How often are flights from LAX to STS delayed?
- 16% of LAX–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 11 minutes.
- What is the best time of day to fly from LAX to STS?
- Departures around 7 p.m. have the best record (91% on-time), while departures around 9 p.m. have the worst (72%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from LAX to STS?
- The scheduled LAX–STS flight time averages 1h 43m over 399 miles. Actual arrival times vary — flights on this route land 15+ minutes late 16% of the time.
- How often are LAX to STS flights cancelled?
- 1.4% 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 LAX to STS?
- December 2025 was the roughest month in this dataset, with only 60% of arrivals on time. The best was September 2025 at 95%. If your dates are flexible, that 35-point gap is worth planning around.
Explore related pages
More routes from LAX
Other ways to fly to Santa Rosa (STS)
Related guides
Based on 1,539 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.