Historical on-time performance
Oakland to Portland
543 miData through May 2026Source: US DOT · BTS
Flights on OAK–PDX arrive on time 80% of the time over the last 12 months.
On-time rate80%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 1,205 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time80%Medianon timep9035 minCancel0.5%Flights1,205
Why flights run late
Delay causes
- Airline29%
- Weather0%
- Air traffic (NAS)3%
- Late aircraft69%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather33%
- Air traffic (NAS)67%
- Security0%
Most cancellations here are attributed to Air traffic (NAS). Shares are among 6 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 OAK → 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 — 95% on time.
- Mornings95% on time · p90 on time · 1,483 flights
- Middays87% on time · p90 15 min · 978 flights
- Evenings77% on time · p90 40 min · 1,269 flights
- Afternoons75% on time · p90 30 min · 681 flights
- Overnights69% on time · p90 55 min · 729 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 78% to 89% on time.
- Tuesdays89% on time · p90 15 min · 742 flights
- Saturdays87% on time · p90 20 min · 481 flights
- Wednesdays84% on time · p90 20 min · 740 flights
- Mondays83% on time · p90 25 min · 815 flights
- Thursdays82% on time · p90 30 min · 810 flights
- Fridays79% on time · p90 40 min · 828 flights
- Sundays78% on time · p90 35 min · 724 flights
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