Historical on-time performance
Portland to Oakland
543 miData through May 2026Source: US DOT · BTS
Flights on PDX–OAK arrive on time 75% of the time over the last 12 months.
On-time rate75%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights
based on 1,204 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time75%Medianon timep9035 minCancel0.7%Flights1,204
Why flights run late
Delay causes
- Airline25%
- Weather0%
- Air traffic (NAS)5%
- Late aircraft70%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline22%
- Weather22%
- Air traffic (NAS)56%
- Security0%
Most cancellations here are attributed to Air traffic (NAS). Shares are among 9 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 → OAK
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 · 1,662 flights
- Middays84% on time · p90 20 min · 1,111 flights
- Afternoons78% on time · p90 30 min · 767 flights
- Evenings72% on time · p90 45 min · 847 flights
- Overnights71% on time · p90 50 min · 695 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 80% to 87% on time.
- Saturdays87% on time · p90 15 min · 480 flights
- Wednesdays87% on time · p90 15 min · 723 flights
- Tuesdays85% on time · p90 20 min · 721 flights
- Thursdays81% on time · p90 25 min · 807 flights
- Fridays81% on time · p90 30 min · 822 flights
- Mondays81% on time · p90 30 min · 809 flights
- Sundays80% on time · p90 35 min · 720 flights
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