Route on-time record
STS to SNA: most on-time flights and the best time to fly
Santa Rosa (Charles M. Schulz Sonoma County Airport) to Santa Ana (John Wayne Orange County International Airport). 746 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was SkyWest 3030 at 5:27 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
STS → SNA
Santa Rosa to Santa Ana: 746 nonstop flights a year
On time (12 months)
77%
Cancelled
0.8%
avg delay 18 min
Best time to leave
No clear winner
Most reliable airline
SkyWest
77% 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 3030 · sold as United Express, Delta Connection, American Eagle or Alaska
5:27 PM → 7:08 PM1h 41m nonstop
Local times, typical schedule. Last flown 2026-03-16.
81%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 85% of the time (20 flights, Jun 2025 to May 2026).
- Short track record (20 flights), so its score leans on the airline's record at this hour.
Limited track record · 20 flights
Find 5:27 PM flight fares Opens this date on Aviasales#2 · SkyWest 3432 · sold as United Express, Delta Connection, American Eagle or Alaska
5:50 PM → 7:31 PM1h 41m nonstop
Local times, typical schedule. Last flown 2026-05-12.
81%
chance on time
- On time (history)
- 83%
- Cancelled
- 1.1%
- Avg arrival delay
- 10 min
- Arrived on time 83% of the time (94 flights, Jun 2025 to May 2026).
Moderate track record · 94 flights
Find 5:50 PM flight fares Opens this date on Aviasales#3 · SkyWest 3378 · sold as United Express, Delta Connection, American Eagle or Alaska
9:34 AM → 11:14 AM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 94%
- Cancelled
- 5.6%
- Avg arrival delay
- 6 min
- Arrived on time 94% of the time (17 flights, Jun 2025 to May 2026).
- Short track record (17 flights), so its score leans on the airline's record at this hour.
Limited track record · 17 flights
Find 9:34 AM flight fares Opens this date on Aviasales#4 · SkyWest 3287 · sold as United Express, Delta Connection, American Eagle or Alaska
11:43 AM → 1:24 PM1h 41m nonstop
Local times, typical schedule. Last flown 2026-05-12.
79%
chance on time
- On time (history)
- 81%
- Cancelled
- 1.2%
- Avg arrival delay
- 19 min
- Arrived on time 81% of the time (83 flights, Jun 2025 to May 2026).
- 58% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 83 flights
Find 11:43 AM flight fares Opens this date on Aviasales#5 · SkyWest 3395 · sold as United Express, Delta Connection, American Eagle or Alaska
9:56 AM → 11:37 AM1h 41m nonstop
Local times, typical schedule. Last flown 2026-03-17.
75%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.7%
- Avg arrival delay
- 25 min
- Arrived on time 75% of the time (288 flights, Jun 2025 to May 2026).
Strong track record · 288 flights
Find 9:56 AM flight fares Opens this date on Aviasales#6 · SkyWest 3433 · sold as United Express, Delta Connection, American Eagle or Alaska
2:19 PM → 4:01 PM1h 42m nonstop
Local times, typical schedule. Last flown 2026-05-31.
74%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.9%
- Avg arrival delay
- 16 min
- Arrived on time 73% of the time (116 flights, Jun 2025 to May 2026).
- 54% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 116 flights
Find 2:19 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)77%
746 flights · 77% on time as flown · 0.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- 9 AM to noon77%
365 flights · avg delay 22 min
- Noon to 3 PM77%
231 flights · avg delay 17 min
- 3 to 6 PM79%
144 flights · avg delay 11 min
Best day: Wednesday (86%). Worst: Friday (74%).
Smarter routing
Nearby airports that run more on time
STS → LAX 80% chance on time
Charles M. Schulz Sonoma County Airport to Los Angeles International Airport · 688 flights a year · 36 mi from your airports · yours: 77%
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 aircraft45%
- Airline (crew, maintenance, boarding)21%
- Severe weather20%
- Air traffic control and airport volume14%
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 SNA questions
- Which airline is most on time from STS to SNA?
- SkyWest, with a season-adjusted 77% chance of operating and arriving on time over 746 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 SNA?
- December (65% on time); the best was May (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
- SNA to STS (return)
- STS to SAN 76%
- STS to PHX 78%
- STS to LAX 83%
- STS to PDX 90%
- STS to BUR 79%
- STS to SEA 71%
Live status: FAA delays and ground stops