Portland (PDX) to Santa Rosa (STS): On-Time Performance
Data through July 2026
The calendar drives reliability on PDX–STS. October 2024 flights landed on schedule 93% of the time, but December 2025 dropped to 55% — a gap of 38 points. Across the full period the route averages 81% on-time against a national 78%.
- On-time
- 81%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 0.3%
- Flights/day
- 1.8
- last 12 months
- Duration
- 1h 44m
- scheduled
- Distance
- 489 mi
Monthly on-time trend
Best time to fly from PDX to STS
Aim for departures around 2 p.m. (94% on-time); avoid 7 a.m. departures (73%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 79% | 14 min |
| Tuesday | 82% | 10 min |
| Wednesday | 84% | 9 min |
| Thursdaybest | 86% | 7 min |
| Friday | 81% | 9 min |
| Saturday | 82% | 11 min |
| Sunday | 76% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft27%
- Airline operations38%
- National airspace system12%
- Weather23%
Frequently asked questions
- How often are flights from PDX to STS delayed?
- 19% of PDX–STS 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 11 minutes.
- What is the best time of day to fly from PDX to STS?
- Departures around 2 p.m. have the best record (94% on-time), while departures around 7 a.m. have the worst (73%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PDX to STS?
- The scheduled PDX–STS flight time averages 1h 44m over 489 miles. Actual arrival times vary — flights on this route land 15+ minutes late 19% of the time.
- How often are PDX to STS flights cancelled?
- 0.3% 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 PDX to STS?
- December 2025 was the roughest month in this dataset, with only 55% of arrivals on time. The best was October 2024 at 93%. If your dates are flexible, that 38-point gap is worth planning around.
Explore related pages
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Based on 990 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.