PDX to OAK flight delays & on-time performance
Nonstop flights from Portland International Airport to Oakland San Francisco Bay Airport · 543 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PDX or OAK right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Portland (PDX) to Oakland (OAK) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 0.7% were cancelled, and 5% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (91% on time); Southwest Airlines was the least (76%).
- Departures scheduled around 5am did best (96% on time); around 9pm did worst (53%).
- Wednesday was the most reliable day to fly (85% on time) and Monday the least (74%).
- The largest source of delay minutes was late-arriving aircraft (66%).
Which airline is most on time from PDX to OAK?
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% | 3 min | 0.0% | 16 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 91% | 0.0% | 5 min | 1.8% | 113 |
| Southwest Airlines | 76% | 0.8% | 13 min | 5.6% | 1,158 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am96%134 flights
- 6am95%64 flights
- 7am95%132 flights
- 9am94%145 flights
- 10am76%164 flights
- 11am80%15 flights
- 12pm79%48 flights
- 1pm67%27 flights
- 2pm64%57 flights
- 3pm95%37 flights
- 4pm69%97 flights
- 5pm62%126 flights
- 6pm69%84 flights
- 7pm78%32 flights
- 9pm53%86 flights
- 10pm33%33 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday74%0.5% cancelled
- Tuesday79%0.5% cancelled
- Wednesday85%0.5% cancelled
- Thursday76%0.6% cancelled
- Friday76%0.0% cancelled
- Saturday81%2.6% cancelled
- Sunday75%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 aircraft66%
- Airline (crew, maintenance, cleaning, fueling)29%
- Air traffic control & airport congestion5%
- Security0%
- Extreme weather0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion56%
- Extreme weather33%
- Airline (crew, maintenance, cleaning, fueling)11%
- Security0%
PDX to OAK: common questions
- How often are PDX to OAK flights on time?
- 78% 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 Portland to Oakland cancelled?
- 0.7% of scheduled flights were cancelled (9 of 1,287).
- How long are typical delays?
- Across all flights the average arrival delay was 12 min (early arrivals count as zero). Flights that were late arrived 50 min behind schedule on average, and 5.2% of flights were an hour or more late.
- How long is taxi time at PDX?
- Flights on this route spent 12 min taxiing from the gate to takeoff on average.
Related routes
Return trip: OAK to PDX — 80% on time
More flights from Portland
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PDX → OAK, nonstop flights by US airlines that report to the DOT. How we calculate this.