Santa Rosa (STS) to Portland (PDX): On-Time Performance
Data through July 2026
The calendar drives reliability on STS–PDX. July 2026 flights landed on schedule 98% of the time, but November 2024 dropped to 72% — a gap of 26 points. Across the full period the route averages 87% on-time against a national 78%. Morning departures also hold up better than evening ones (93% vs 82%), which matters most in the rough months.
- On-time
- 87%
- arrived <15 min late
- Avg delay
- 10 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 1.7
- last 12 months
- Duration
- 1h 42m
- scheduled
- Distance
- 489 mi
Monthly on-time trend
Best time to fly from STS to PDX
Aim for departures around 7 a.m. (96% on-time); avoid 7 p.m. departures (78%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 87% | 12 min |
| Tuesdaybest | 92% | 9 min |
| Wednesday | 91% | 4 min |
| Thursday | 84% | 10 min |
| Friday | 86% | 14 min |
| Saturday | 91% | 7 min |
| Sunday | 81% | 13 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft62%
- Airline operations19%
- National airspace system14%
- Weather5%
Frequently asked questions
- How often are flights from STS to PDX delayed?
- 13% of STS–PDX flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 10 minutes.
- What is the best time of day to fly from STS to PDX?
- Departures around 7 a.m. have the best record (96% on-time), while departures around 7 p.m. have the worst (78%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from STS to PDX?
- The scheduled STS–PDX flight time averages 1h 42m over 489 miles. Actual arrival times vary — flights on this route land 15+ minutes late 13% of the time.
- How often are STS to PDX flights cancelled?
- 1.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from STS to PDX?
- November 2024 was the roughest month in this dataset, with only 72% of arrivals on time. The best was July 2026 at 98%. If your dates are flexible, that 26-point gap is worth planning around.
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Based on 957 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.