Santa Rosa (STS) to Portland (PDX): On-Time Performance
Data through May 2026
The calendar drives reliability on STS–PDX. March 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 86% on-time against a national 78%. Morning departures also hold up better than evening ones (92% vs 82%), which matters most in the rough months.
- On-time
- 86%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 1.5
- 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 11 a.m. (92% on-time); avoid 7 p.m. departures (78%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 87% | 13 min |
| Tuesday | 90% | 10 min |
| Wednesday | 90% | 4 min |
| Thursday | 82% | 12 min |
| Friday | 84% | 16 min |
| Saturdaybest | 90% | 7 min |
| Sunday | 79% | 14 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft61%
- Airline operations20%
- National airspace system14%
- Weather5%
Frequently asked questions
- How often are flights from STS to PDX delayed?
- 14% of STS–PDX flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 11 minutes.
- What is the best time of day to fly from STS to PDX?
- Departures around 11 a.m. have the best record (92% 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 14% of the time.
- How often are STS to PDX flights cancelled?
- 1.3% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, 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 March 2026 at 98%. If your dates are flexible, that 26-point gap is worth planning around.
Explore related pages
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Based on 834 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.