OAK to SEA flight delays & on-time performance
Nonstop flights from Oakland San Francisco Bay Airport to Seattle–Tacoma International Airport · 672 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at OAK or SEA 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 Seattle (SEA) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 0.8% were cancelled, and 5% arrived an hour or more late.
- Alaska Airlines was the most punctual airline here (81% on time); Southwest Airlines was the least (75%).
- Departures scheduled around 5am did best (97% on time); around 9pm did worst (60%).
- Saturday was the most reliable day to fly (88% on time) and Friday the least (72%).
- The largest source of delay minutes was late-arriving aircraft (49%).
Which airline is most on time from OAK to SEA?
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 | 81% | 1.4% | 11 min | 3.9% | 734 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 79% | 5.0% | 13 min | 5.3% | 40 |
| Southwest Airlines | 75% | 0.3% | 13 min | 6.2% | 1,105 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am97%61 flights
- 6am92%378 flights
- 7am93%116 flights
- 8am83%37 flights
- 9am73%73 flights
- 10am82%137 flights
- 11am83%93 flights
- 12pm82%66 flights
- 1pm73%103 flights
- 2pm68%188 flights
- 3pm68%45 flights
- 4pm59%49 flights
- 5pm70%119 flights
- 6pm71%154 flights
- 7pm67%36 flights
- 8pm67%81 flights
- 9pm60%126 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday78%0.7% cancelled
- Tuesday83%1.1% cancelled
- Wednesday78%0.7% cancelled
- Thursday74%0.4% cancelled
- Friday72%1.4% cancelled
- Saturday88%0.5% cancelled
- Sunday72%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 aircraft49%
- Airline (crew, maintenance, cleaning, fueling)33%
- Air traffic control & airport congestion18%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)53%
- Air traffic control & airport congestion33%
- Extreme weather13%
- Security0%
OAK to SEA: common questions
- How often are OAK to SEA 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 Oakland to Seattle cancelled?
- 0.8% of scheduled flights were cancelled (15 of 1,879).
- 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 5.3% of flights were an hour or more late.
- How long is taxi time at OAK?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SEA to OAK — 74% 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 → SEA, nonstop flights by US airlines that report to the DOT. How we calculate this.