Route on-time record
PHX to STS: most on-time flights and the best time to fly
Phoenix (Phoenix Sky Harbor International Airport) to Santa Rosa (Charles M. Schulz Sonoma County Airport). 693 nonstop flights in Jun 2025 to May 2026, 83% arrived within 15 minutes and 0.3% were cancelled. The most reliable flight number was SkyWest 6459 at 1:35 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
PHX → STS
Phoenix to Santa Rosa: 693 nonstop flights a year
On time (12 months)
83%
Cancelled
0.3%
avg delay 10 min
Best time to leave
No clear winner
Most reliable airline
SkyWest
79% 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 6459 · sold as United Express, Delta Connection, American Eagle or Alaska
1:35 PM → 3:50 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 6402; its record covers all of them.
81%
chance on time
- On time (history)
- 81%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 81% of the time (48 flights, Jun 2025 to May 2026).
- Never cancelled in 48 scheduled flights.
- Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).
- Short track record (48 flights), so its score leans on the airline's record at this hour.
Limited track record · 48 flights
Find 1:35 PM flight fares Opens this date on Aviasales#2 · SkyWest 6361 · sold as United Express, Delta Connection, American Eagle or Alaska
10:07 AM → 12:33 PM2h 26m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 6448; its record covers all of them.
76%
chance on time
- On time (history)
- 76%
- Cancelled
- 0.0%
- Avg arrival delay
- 16 min
- Arrived on time 76% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).
- Short track record (55 flights), so its score leans on the airline's record at this hour.
Limited track record · 55 flights
Find 10:07 AM 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)79%
233 flights · 76% on time as flown · 0.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- 9 AM to noon81%
362 flights · avg delay 10 min
- Noon to 3 PM84%
330 flights · avg delay 9 min
Best day: Tuesday (91%). Worst: Monday (80%).
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
- Airline (crew, maintenance, boarding)47%
- Late-arriving aircraft37%
- Air traffic control and airport volume15%
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
PHX to STS questions
- Which airline is most on time from PHX to STS?
- SkyWest, with a season-adjusted 79% chance of operating and arriving on time over 233 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 PHX to STS?
- July (78% on time); the best was September (91%), 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 PHX
- STS to PHX (return)
- PHX to DEN 77%
- PHX to LAX 83%
- PHX to SEA 83%
- PHX to LAS 79%
- PHX to SAN 74%
- PHX to SLC 83%
- PHX to ORD 77%
- PHX to DFW 80%
- PHX to SFO 71%
- PHX to SNA 80%
- PHX to ATL 82%
- PHX to PDX 79%
Live status: FAA delays and ground stops