Santa Rosa (STS) to Los Angeles (LAX): On-Time Performance
Data through May 2026
When you fly STS to LAX matters as much as anything else about the booking: the route swung from 92% on-time in August 2024 to just 68% in December 2024. Across the full period the route averages 81% on-time against a national 78%. Morning departures also hold up better than evening ones (87% vs 72%), which matters most in the rough months.
- On-time
- 81%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 1.7%
- Flights/day
- 1.9
- last 12 months
- Duration
- 1h 41m
- scheduled
- Distance
- 399 mi
Monthly on-time trend
Best time to fly from STS to LAX
Aim for departures around 10 a.m. (90% on-time); avoid 7 p.m. departures (70%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 76% | 14 min |
| Tuesdaybest | 86% | 9 min |
| Wednesday | 85% | 9 min |
| Thursday | 82% | 13 min |
| Friday | 78% | 17 min |
| Saturday | 86% | 9 min |
| Sunday | 77% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft46%
- Airline operations30%
- National airspace system19%
- Weather6%
Frequently asked questions
- How often are flights from STS to LAX delayed?
- 19% of STS–LAX 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 13 minutes.
- What is the best time of day to fly from STS to LAX?
- Departures around 10 a.m. have the best record (90% on-time), while departures around 7 p.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 STS to LAX?
- The scheduled STS–LAX flight time averages 1h 41m over 399 miles. Actual arrival times vary — flights on this route land 15+ minutes late 19% of the time.
- How often are STS to LAX flights cancelled?
- 1.7% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What is the worst month to fly from STS to LAX?
- December 2024 was the roughest month in this dataset, with only 68% of arrivals on time. The best was August 2024 at 92%. If your dates are flexible, that 24-point gap is worth planning around.
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Based on 1,437 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.