Historical on-time performance
San Francisco to Portland
Flights on SFO–PDX arrive on time 81% of the time over the last 12 months.
based on 3,456 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- United AirlinesOn-time82%Medianon timep9030 minCancel0.2%Flights1,642
- Alaska AirlinesOn-time81%Medianon timep9035 minCancel0.5%Flights1,383
- SkyWest AirlinesOn-time79%Medianon timep9035 minCancel0.2%Flights431
Why flights run late
Delay causes
- Airline33%
- Weather1%
- Air traffic (NAS)11%
- Late aircraft56%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline55%
- Weather0%
- Air traffic (NAS)45%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 11 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 SFO → PDX
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 89% on time.
- Mornings89% on time · p90 10 min · 2,052 flights
- Evenings80% on time · p90 35 min · 1,963 flights
- Overnights78% on time · p90 45 min · 1,285 flights
- Middays77% on time · p90 45 min · 2,839 flights
- Afternoons76% on time · p90 40 min · 2,235 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 86% on time.
- Tuesdays86% on time · p90 20 min · 1,433 flights
- Saturdays83% on time · p90 30 min · 1,342 flights
- Wednesdays82% on time · p90 30 min · 1,437 flights
- Sundays79% on time · p90 40 min · 1,504 flights
- Mondays78% on time · p90 40 min · 1,567 flights
- Fridays76% on time · p90 50 min · 1,554 flights
- Thursdays76% on time · p90 45 min · 1,537 flights
Keep exploring