Seattle (SEA) to Oakland (OAK): On-Time Performance
Data through May 2026
The calendar drives reliability on SEA–OAK. November 2024 flights landed on schedule 84% of the time, but June 2024 dropped to 61% — a gap of 23 points. Across the full period the route averages 73% 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
- 73%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 0.4%
- Flights/day
- 5.3
- last 12 months
- Duration
- 2h 10m
- scheduled
- Distance
- 672 mi
Best airline from SEA to OAK
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 78% | 12 min | 1.0% | 200 |
| Southwest Airlines | 74% | 15 min | 0.1% | 2,458 |
| Alaska Airlines | 71% | 13 min | 1.0% | 1,291 |
Monthly on-time trend
Best time to fly from SEA to OAK
Aim for departures around 8 a.m. (97% on-time); avoid 7 p.m. departures (51%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 71% | 15 min |
| Tuesdaybest | 83% | 10 min |
| Wednesday | 81% | 10 min |
| Thursday | 69% | 17 min |
| Friday | 68% | 18 min |
| Saturday | 78% | 13 min |
| Sunday | 66% | 17 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 operations31%
- National airspace system10%
- Weather1%
- Security1%
Frequently asked questions
- How often are flights from SEA to OAK delayed?
- 27% of SEA–OAK flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. 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 200 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 8 a.m. have the best record (97% on-time), while departures around 7 p.m. have the worst (51%). 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 10m over 672 miles. Actual arrival times vary — flights on this route land 15+ minutes late 27% of the time.
- How often are SEA to OAK flights cancelled?
- 0.4% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from SEA to OAK?
- June 2024 was the roughest month in this dataset, with only 61% of arrivals on time. The best was November 2024 at 84%. If your dates are flexible, that 23-point gap is worth planning around.
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Based on 3,949 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.