Route on-time record
STS to LAX: most on-time flights and the best time to fly
Santa Rosa (Charles M. Schulz Sonoma County Airport) to Los Angeles (Los Angeles International Airport). 688 nonstop flights in Jun 2025 to May 2026, 83% arrived within 15 minutes and 2.8% were cancelled. The most reliable flight number was SkyWest 3008 at 12:10 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
STS → LAX
Santa Rosa to Los Angeles: 688 nonstop flights a year
On time (12 months)
83%
Cancelled
2.8%
avg delay 13 min
Best time to leave
Noon to 3 PM
98% on time vs 74% 6 to 9 PM
Most reliable airline
SkyWest
80% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · SkyWest 3008 · sold as United Express, Delta Connection, American Eagle or Alaska
12:10 PM → 1:49 PM1h 39m nonstop
Local times, typical schedule. Last flown 2026-04-20.
89%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 100% of the time (20 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Noon to 3 PM: 98% on time; 6 to 9 PM: 74%).
- Short track record (20 flights), so its score leans on the airline's record at this hour.
Limited track record · 20 flights
Find 12:10 PM flight fares Opens this date on Aviasales#2 · Alaska 781
7:59 AM → 9:38 AM1h 39m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 83% of the time (18 flights, Jun 2025 to May 2026).
- Short track record (18 flights), so its score leans on the route's record at this hour.
Limited track record · 18 flights
Find Alaska 781 fares Opens this date on Aviasales#3 · SkyWest 3366 · sold as United Express, Delta Connection, American Eagle or Alaska
7:05 AM → 9:01 AM1h 47m nonstop
Local times, typical schedule. Last flown 2026-05-12.
82%
chance on time
- On time (history)
- 88%
- Cancelled
- 9.9%
- Avg arrival delay
- 10 min
- Arrived on time 88% of the time (163 flights, Jun 2025 to May 2026).
- Cancelled 9.9% of the time (18 of 181).
Moderate track record · 163 flights
Find 7:05 AM flight fares Opens this date on Aviasales#4 · SkyWest 3414 · sold as United Express, Delta Connection, American Eagle or Alaska
7:53 PM → 9:31 PM1h 38m nonstop
Local times, typical schedule. Last flown 2026-05-12.
76%
chance on time
- On time (history)
- 78%
- Cancelled
- 0.6%
- Avg arrival delay
- 16 min
- Arrived on time 78% of the time (167 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 74% on time; Noon to 3 PM: 98%).
- Lands inside LAX's trouble window: 53% of its 15 ground stops and delay programs started between 4 PM and 10 PM.
- 58% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 167 flights
Find 7:53 PM flight fares Opens this date on Aviasales#5 · SkyWest 3466 · sold as United Express, Delta Connection, American Eagle or Alaska
5:21 PM → 7:01 PM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-31.
72%
chance on time
- On time (history)
- 69%
- Cancelled
- 0.0%
- Avg arrival delay
- 18 min
- Arrived on time 69% of the time (107 flights, Jun 2025 to May 2026).
- Never cancelled in 107 scheduled flights.
- Lands inside LAX's trouble window: 53% of its 15 ground stops and delay programs started between 4 PM and 10 PM.
Moderate track record · 107 flights
Find 5:21 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)80%
670 flights · 83% on time as flown · 2.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM89%
325 flights · avg delay 9 min
- Noon to 3 PM98%
42 flights · avg delay 2 min
- 3 to 6 PM75%
73 flights · avg delay 20 min
- 6 to 9 PM74%
248 flights · avg delay 16 min
Best day: Saturday (88%). Worst: Friday (75%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft46%
- Airline (crew, maintenance, boarding)32%
- Air traffic control and airport volume20%
- Severe weather1%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
STS to LAX questions
- What time of day is best to fly STS to LAX?
- Noon to 3 PM: 98% of flights arrived on time, against 74% for departures 6 to 9 PM.
- Which airline is most on time from STS to LAX?
- SkyWest, with a season-adjusted 80% chance of operating and arriving on time over 670 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on STS to LAX?
- November (76% on time); the best was August (86%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from STS
- LAX to STS (return)
- STS to SAN 76%
- STS to SNA 77%
- STS to PHX 78%
- STS to PDX 90%
- STS to BUR 79%
- STS to SEA 71%
Live status: FAA delays and ground stops