STS to LAX flight delays & on-time performance
Nonstop flights from Charles M. Schulz Sonoma County Airport to Los Angeles International Airport · 399 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at STS or LAX right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Santa Rosa (STS) to Los Angeles (LAX) arrived on time 85% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 2.8% were cancelled, and 5% arrived an hour or more late.
- Departures scheduled around 12pm did best (98% on time); around 3pm did worst (76%).
- Saturday was the most reliable day to fly (94% on time) and Monday the least (79%).
- The largest source of delay minutes was late-arriving aircraft (44%).
Which airline is most on time from STS to LAX?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Alaska Airlines | 85% | 0.0% | 4 min | 0.0% | 27 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 85% | 2.9% | 12 min | 5.4% | 699 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am92%52 flights
- 7am88%273 flights
- 11am87%52 flights
- 12pm98%41 flights
- 3pm76%45 flights
- 5pm84%74 flights
- 6pm76%67 flights
- 7pm82%100 flights
- 8pm65%21 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday79%2.5% cancelled
- Tuesday88%4.9% cancelled
- Wednesday87%1.1% cancelled
- Thursday86%1.7% cancelled
- Friday82%1.7% cancelled
- Saturday94%8.0% cancelled
- Sunday84%1.6% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft44%
- Airline (crew, maintenance, cleaning, fueling)38%
- Air traffic control & airport congestion16%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Air traffic control & airport congestion0%
- Security0%
STS to LAX: common questions
- How often are STS to LAX flights on time?
- 85% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Santa Rosa to Los Angeles cancelled?
- 2.8% of scheduled flights were cancelled (20 of 726).
- How long are typical delays?
- Across all flights the average arrival delay was 11 min (early arrivals count as zero). Flights that were late arrived 68 min behind schedule on average, and 5.2% of flights were an hour or more late.
- How long is taxi time at STS?
- Flights on this route spent 22 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LAX to STS — 89% on time
More flights from Santa Rosa
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: STS → LAX, nonstop flights by US airlines that report to the DOT. How we calculate this.