OAK to PDX flight delays & on-time performance
Nonstop flights from Oakland San Francisco Bay Airport to Portland International Airport · 543 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at OAK or PDX right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Oakland (OAK) to Portland (PDX) arrived on time 80% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.4% were cancelled, and 6% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (88% on time); Southwest Airlines was the least (79%).
- Departures scheduled around 8am did best (100% on time); around 8pm did worst (65%).
- Saturday was the most reliable day to fly (89% on time) and Sunday the least (71%).
- The largest source of delay minutes was late-arriving aircraft (69%).
Which airline is most on time from OAK to PDX?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Alaska Airlines | 100% | 0.0% | 0 min | 0.0% | 16 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 88% | 0.0% | 6 min | 2.3% | 131 |
| Southwest Airlines | 79% | 0.4% | 12 min | 6.1% | 1,158 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am99%109 flights
- 6am96%23 flights
- 7am96%105 flights
- 8am100%50 flights
- 9am98%57 flights
- 10am90%61 flights
- 11am80%84 flights
- 12pm92%102 flights
- 1pm61%28 flights
- 2pm78%67 flights
- 3pm72%60 flights
- 4pm56%34 flights
- 5pm72%86 flights
- 6pm79%90 flights
- 7pm77%108 flights
- 8pm65%182 flights
- 9pm52%31 flights
- 10pm57%28 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday77%0.5% cancelled
- Tuesday89%0.5% cancelled
- Wednesday87%0.5% cancelled
- Thursday76%0.5% cancelled
- Friday76%0.0% cancelled
- Saturday89%0.0% cancelled
- Sunday71%0.5% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft69%
- Airline (crew, maintenance, cleaning, fueling)28%
- Air traffic control & airport congestion3%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion80%
- Extreme weather20%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
OAK to PDX: common questions
- How often are OAK to PDX flights on time?
- 80% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Oakland to Portland cancelled?
- 0.4% of scheduled flights were cancelled (5 of 1,305).
- How long are typical delays?
- Across all flights the average arrival delay was 11 min (early arrivals count as zero). Flights that were late arrived 52 min behind schedule on average, and 5.6% of flights were an hour or more late.
- How long is taxi time at OAK?
- Flights on this route spent 12 min taxiing from the gate to takeoff on average.
Related routes
Return trip: PDX to OAK — 78% on time
More flights from Oakland
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: OAK → PDX, nonstop flights by US airlines that report to the DOT. How we calculate this.