Historical on-time performance
Portland to San Francisco
Flights on PDX–SFO arrive on time 74% of the time over the last 12 months.
based on 3,458 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesbestOn-time86%Medianon timep9025 minCancel0.5%Flights433
- Alaska AirlinesOn-time74%Medianon timep9040 minCancel0.5%Flights1,383
- United AirlinesOn-time71%Medianon timep9050 minCancel0.3%Flights1,642
Why flights run late
Delay causes
- Airline15%
- Weather0%
- Air traffic (NAS)60%
- Late aircraft25%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline57%
- Weather0%
- Air traffic (NAS)43%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 14 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 → SFO
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 65% to 77% on time.
- Middays77% on time · p90 45 min · 2,754 flights
- Afternoons77% on time · p90 50 min · 1,837 flights
- Mornings74% on time · p90 40 min · 3,270 flights
- Overnights73% on time · p90 50 min · 330 flights
- Evenings65% on time · p90 65 min · 2,231 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 79% on time.
- Saturdays79% on time · p90 40 min · 1,331 flights
- Tuesdays78% on time · p90 35 min · 1,446 flights
- Wednesdays75% on time · p90 45 min · 1,443 flights
- Sundays71% on time · p90 50 min · 1,512 flights
- Fridays71% on time · p90 55 min · 1,573 flights
- Mondays71% on time · p90 55 min · 1,573 flights
- Thursdays71% on time · p90 55 min · 1,544 flights
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