Route on-time record
PDX to STS: most on-time flights and the best time to fly
Portland (Portland International Airport) to Santa Rosa (Charles M. Schulz Sonoma County Airport). 591 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 0.5% were cancelled. The most reliable flight number was SkyWest 3050 at 3:26 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
PDX → STS
Portland to Santa Rosa: 591 nonstop flights a year
On time (12 months)
81%
Cancelled
0.5%
avg delay 13 min
Best time to leave
Noon to 3 PM
94% on time vs 76% before 9 AM
Most reliable airline
SkyWest
81% 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 3050 · sold as United Express, Delta Connection, American Eagle or Alaska
3:26 PM → 5:10 PM1h 44m nonstop
Local times, typical schedule. Last flown 2026-05-12.
85%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 90% of the time (49 flights, Jun 2025 to May 2026).
- Never cancelled in 49 scheduled flights.
- Short track record (49 flights), so its score leans on the airline's record at this hour.
Limited track record · 49 flights
Find 3:26 PM flight fares Opens this date on Aviasales#2 · SkyWest 3414 · sold as United Express, Delta Connection, American Eagle or Alaska
2:55 PM → 4:41 PM1h 46m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 3382; its record covers all of them.
85%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 85% of the time (254 flights, Jun 2025 to May 2026).
- Never cancelled in 254 scheduled flights.
- Leaves in this route's most on-time window (Noon to 3 PM: 94% on time; Before 9 AM: 76%).
Strong track record · 254 flights
Find 2:55 PM flight fares Opens this date on Aviasales#3 · SkyWest 3383 · sold as United Express, Delta Connection, American Eagle or Alaska
9:45 PM → 11:30 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 88% of the time (16 flights, Jun 2025 to May 2026).
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find 9:45 PM flight fares Opens this date on Aviasales#4 · SkyWest 3483 · sold as United Express, Delta Connection, American Eagle or Alaska
7:15 AM → 9:03 AM1h 49m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
- On time (history)
- 76%
- Cancelled
- 0.8%
- Avg arrival delay
- 20 min
- Arrived on time 76% of the time (228 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Before 9 AM: 76% on time; Noon to 3 PM: 94%).
Strong track record · 228 flights
Find 7:15 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)81%
565 flights · 81% on time as flown · 0.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM76%
242 flights · avg delay 20 min
- Noon to 3 PM94%
82 flights · avg delay 6 min
- 3 to 6 PM83%
156 flights · avg delay 7 min
- 6 to 9 PM79%
90 flights · avg delay 13 min
Best day: Thursday (87%). Worst: Sunday (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
- Airline (crew, maintenance, boarding)39%
- Severe weather29%
- Late-arriving aircraft20%
- Air traffic control and airport volume12%
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
PDX to STS questions
- What time of day is best to fly PDX to STS?
- Noon to 3 PM: 94% of flights arrived on time, against 76% for departures before 9 AM.
- Which airline is most on time from PDX to STS?
- SkyWest, with a season-adjusted 81% chance of operating and arriving on time over 565 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 PDX to STS?
- June (69% on time); the best was September (90%), 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 PDX
- STS to PDX (return)
- PDX to SEA 84%
- PDX to LAX 87%
- PDX to DEN 80%
- PDX to PHX 80%
- PDX to SFO 75%
- PDX to LAS 81%
- PDX to ORD 77%
- PDX to DFW 80%
- PDX to SLC 88%
- PDX to SMF 83%
- PDX to SAN 80%
- PDX to SJC 82%
Live status: FAA delays and ground stops