Portland (PDX) to Oakland (OAK): On-Time Performance
Data through July 2026
The calendar drives reliability on PDX–OAK. January 2025 flights landed on schedule 94% of the time, but July 2025 dropped to 60% — a gap of 34 points. Across the full period the route averages 80% on-time against a national 78%. Morning departures also hold up better than evening ones (92% vs 66%), which matters most in the rough months.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 0.5%
- Flights/day
- 3.5
- last 12 months
- Duration
- 1h 45m
- scheduled
- Distance
- 543 mi
Best airline from PDX to OAK
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 91% | 5 min | 0.0% | 113 |
| Southwest Airlines | 80% | 12 min | 0.5% | 2,739 |
Monthly on-time trend
Best time to fly from PDX to OAK
Aim for departures around 6 a.m. (97% on-time); avoid 10 p.m. departures (35%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 13 min |
| Tuesday | 82% | 10 min |
| Wednesdaybest | 85% | 8 min |
| Thursday | 78% | 13 min |
| Friday | 78% | 12 min |
| Saturday | 84% | 10 min |
| Sunday | 79% | 13 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft70%
- Airline operations25%
- National airspace system4%
Frequently asked questions
- How often are flights from PDX to OAK delayed?
- 20% of PDX–OAK flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 11 minutes.
- Which airline is most reliable from PDX to OAK?
- SkyWest Airlines has the best on-time record on this route at 91%, based on 113 flights. 2 airlines flew PDX–OAK frequently enough to compare in this period.
- What is the best time of day to fly from PDX to OAK?
- Departures around 6 a.m. have the best record (97% on-time), while departures around 10 p.m. have the worst (35%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PDX to OAK?
- The scheduled PDX–OAK flight time averages 1h 45m over 543 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are PDX to OAK flights cancelled?
- 0.5% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from PDX to OAK?
- July 2025 was the roughest month in this dataset, with only 60% of arrivals on time. The best was January 2025 at 94%. If your dates are flexible, that 34-point gap is worth planning around.
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Based on 2,868 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.