Los Angeles (LAX) to Santa Rosa (STS): On-Time Performance
Data through May 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 83% on-time against a national 78%.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 1.5%
- Flights/day
- 1.9
- last 12 months
- Duration
- 1h 42m
- scheduled
- Distance
- 399 mi
Monthly on-time trend
Best time to fly from LAX to STS
Aim for departures around 5 p.m. (93% on-time); avoid 1 p.m. departures (68%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 80% | 12 min |
| Tuesdaybest | 88% | 7 min |
| Wednesday | 86% | 7 min |
| Thursday | 80% | 16 min |
| Friday | 83% | 14 min |
| Saturday | 87% | 7 min |
| Sunday | 80% | 11 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft38%
- Airline operations39%
- National airspace system13%
- Weather10%
Frequently asked questions
- How often are flights from LAX to STS delayed?
- 17% of LAX–STS flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. 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 5 p.m. have the best record (93% on-time), while departures around 1 p.m. have the worst (68%). 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 42m over 399 miles. Actual arrival times vary — flights on this route land 15+ minutes late 17% of the time.
- How often are LAX to STS flights cancelled?
- 1.5% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, 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.
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Based on 1,439 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.