Historical on-time performance
Portland to Santa Rosa
489 miData through May 2026Source: US DOT · BTS
Flights on PDX–STS arrive on time 80% of the time over the last 12 months.
On-time rate80%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights
based on 536 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time80%Medianon timep9030 minCancel0.4%Flights536
Why flights run late
Delay causes
- Airline39%
- Weather30%
- Air traffic (NAS)13%
- Late aircraft18%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather50%
- Air traffic (NAS)50%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 2 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly PDX → STS
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 74% to 84% on time.
- Afternoons84% on time · p90 20 min · 415 flights
- Evenings79% on time · p90 30 min · 263 flights
- Mornings74% on time · p90 45 min · 339 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 84% on time.
- Thursdays84% on time · p90 20 min · 161 flights · limited
- Saturdays82% on time · p90 30 min · 132 flights · limited
- Wednesdays82% on time · p90 25 min · 141 flights · limited
- Tuesdays80% on time · p90 25 min · 133 flights · limited
- Fridays77% on time · p90 35 min · 163 flights · limited
- Mondays77% on time · p90 45 min · 159 flights · limited
- Sundays76% on time · p90 40 min · 163 flights · limited
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