Seattle (SEA) to Oakland (OAK): On-Time Performance
Data through July 2026
The calendar drives reliability on SEA–OAK. November 2024 flights landed on schedule 84% of the time, but August 2025 dropped to 64% — a gap of 20 points. Across the full period the route averages 74% on-time against a national 78%. Morning departures also hold up better than evening ones (83% vs 63%), which matters most in the rough months.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 0.4%
- Flights/day
- 5.2
- last 12 months
- Duration
- 2h 11m
- scheduled
- Distance
- 672 mi
Best airline from SEA to OAK
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 78% | 12 min | 1.2% | 170 |
| Southwest Airlines | 74% | 15 min | 0.1% | 2,548 |
| Alaska Airlines | 73% | 13 min | 0.9% | 1,407 |
Monthly on-time trend
Best time to fly from SEA to OAK
Aim for departures around 6 a.m. (97% on-time); avoid 7 p.m. departures (50%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 71% | 15 min |
| Tuesdaybest | 84% | 10 min |
| Wednesday | 82% | 9 min |
| Thursday | 68% | 17 min |
| Friday | 69% | 17 min |
| Saturday | 79% | 12 min |
| Sunday | 65% | 19 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft57%
- Airline operations33%
- National airspace system9%
- Weather1%
Frequently asked questions
- How often are flights from SEA to OAK delayed?
- 26% of SEA–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 14 minutes.
- Which airline is most reliable from SEA to OAK?
- SkyWest Airlines has the best on-time record on this route at 78%, based on 170 flights. 3 airlines flew SEA–OAK frequently enough to compare in this period.
- What is the best time of day to fly from SEA to OAK?
- Departures around 6 a.m. have the best record (97% on-time), while departures around 7 p.m. have the worst (50%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SEA to OAK?
- The scheduled SEA–OAK flight time averages 2h 11m over 672 miles. Actual arrival times vary — flights on this route land 15+ minutes late 26% of the time.
- How often are SEA to OAK flights cancelled?
- 0.4% 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 SEA to OAK?
- August 2025 was the roughest month in this dataset, with only 64% of arrivals on time. The best was November 2024 at 84%. If your dates are flexible, that 20-point gap is worth planning around.
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Based on 4,125 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.