Historical on-time performance
San Diego to Portland
Flights on SAN–PDX arrive on time 85% of the time over the last 12 months.
based on 1,696 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- Alaska AirlinesOn-time85%Medianon timep9020 minCancel1.0%Flights1,635
- Southwest AirlinesOn-time69%Median5 minp9040 minCancel0.0%Flights61
Why flights run late
Delay causes
- Airline28%
- Weather1%
- Air traffic (NAS)10%
- Late aircraft59%
- Security1%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline47%
- Weather47%
- Air traffic (NAS)6%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 17 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 SAN → 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 — 92% on time.
- Mornings92% on time · p90 5 min · 1,211 flights
- Afternoons85% on time · p90 20 min · 1,100 flights
- Middays81% on time · p90 25 min · 1,201 flights
- Evenings77% on time · p90 35 min · 996 flights
- Overnights72% on time · p90 50 min · 647 flights
Best day of week
Tuesdays are the most reliable day to fly this route — 91% on time.
- Tuesdays91% on time · p90 10 min · 667 flights
- Wednesdays85% on time · p90 20 min · 677 flights
- Saturdays84% on time · p90 25 min · 667 flights
- Mondays83% on time · p90 25 min · 769 flights
- Thursdays80% on time · p90 25 min · 772 flights
- Fridays80% on time · p90 30 min · 772 flights
- Sundays78% on time · p90 35 min · 831 flights
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