SEA to OAK flight delays & on-time performance
Nonstop flights from Seattle–Tacoma International Airport to Oakland San Francisco Bay Airport · 672 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SEA or OAK right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Seattle (SEA) to Oakland (OAK) arrived on time 74% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.7% were cancelled, and 6% arrived an hour or more late.
- Alaska Airlines was the most punctual airline here (77% on time); Southwest Airlines was the least (72%).
- Departures scheduled around 6am did best (98% on time); around 7pm did worst (50%).
- Saturday was the most reliable day to fly (84% on time) and Sunday the least (67%).
- The largest source of delay minutes was late-arriving aircraft (55%).
Which airline is most on time from SEA 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 |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 84% | 3.4% | 10 min | 5.3% | 59 |
| Alaska Airlines | 77% | 1.2% | 12 min | 5.7% | 734 |
| Southwest Airlines | 72% | 0.2% | 16 min | 6.6% | 1,102 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am98%86 flights
- 7am96%140 flights
- 8am100%46 flights
- 9am83%189 flights
- 10am76%124 flights
- 11am67%209 flights
- 12pm83%80 flights
- 1pm59%49 flights
- 2pm88%92 flights
- 3pm66%100 flights
- 4pm64%64 flights
- 5pm66%140 flights
- 6pm76%82 flights
- 7pm50%122 flights
- 8pm59%126 flights
- 9pm72%230 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday71%0.4% cancelled
- Tuesday81%1.9% cancelled
- Wednesday82%0.4% cancelled
- Thursday68%1.1% cancelled
- Friday69%0.3% cancelled
- Saturday84%0.0% cancelled
- Sunday67%0.7% 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 aircraft55%
- Airline (crew, maintenance, cleaning, fueling)36%
- Air traffic control & airport congestion8%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)69%
- Air traffic control & airport congestion23%
- Extreme weather8%
- Security0%
SEA to OAK: common questions
- How often are SEA to OAK flights on time?
- 74% 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 Seattle to Oakland cancelled?
- 0.7% of scheduled flights were cancelled (13 of 1,895).
- How long are typical delays?
- Across all flights the average arrival delay was 14 min (early arrivals count as zero). Flights that were late arrived 50 min behind schedule on average, and 6.2% of flights were an hour or more late.
- How long is taxi time at SEA?
- Flights on this route spent 20 min taxiing from the gate to takeoff on average.
Related routes
Return trip: OAK to SEA — 78% on time
More flights from Seattle
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SEA → OAK, nonstop flights by US airlines that report to the DOT. How we calculate this.