Best Time to Fly SEA to OAK: On-Time Stats by Hour & Airline
Seattle/Tacoma International → Oakland International
Data through July 2026 · Last updated October 18, 2026
1,895 flights were scheduled from Seattle (SEA) to Oakland (OAK) in the last 12 months, and 74.0% of those that flew arrived on time, 3.6 points below the US average of 77.6%.
SkyWest Airlines was the most punctual of the 3 airlines on the route at 84.2%, while Southwest Airlines trailed at 71.6%.
January has been the best month (83% on time) and Sunday the weakest day of the week (65%).
0.7% of flights were cancelled, versus 1.8% nationally.
SEA to OAK on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlines | 84.2% | 51 min | 3.4% | 59 |
| Alaska Airlines | 76.8% | 48 min | 1.2% | 734 |
| Southwest Airlines | 71.6% | 51 min | 0.2% | 1,102 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SEA to OAK
On-time arrival % by scheduled departure hour (local time), 3,892 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.3% | 0.0% | 213 |
| 6am–7am | 97.3% | 0.0% | 186 |
| 7am–8am | 95.6% | 0.6% | 161 |
| 8am–9am | 98.0% | 0.0% | 49 |
| 9am–10am | 82.0% | 0.0% | 295 |
| 10am–11am | 82.1% | 0.0% | 280 |
| 11am–12pm | 69.9% | 1.0% | 514 |
| 12pm–1pm | 76.9% | 0.0% | 242 |
| 1pm–2pm | 67.6% | 0.0% | 105 |
| 2pm–3pm | 87.1% | 1.1% | 94 |
| 3pm–4pm | 66.1% | 0.0% | 115 |
| 4pm–5pm | 64.0% | 0.0% | 111 |
| 5pm–6pm | 66.8% | 0.6% | 327 |
| 6pm–7pm | 75.7% | 0.0% | 144 |
| 7pm–8pm | 50.0% | 0.0% | 240 |
| 8pm–9pm | 59.9% | 0.4% | 248 |
| 9pm–10pm | 67.3% | 1.4% | 555 |
| 10pm–11pm | Limited data | 13 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SEA to OAK
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 74.7% | -2.1 pts | 0.0% | 71 |
| Christmas & New Year (Dec 20 - Jan 3) | 65.4% | -11.4 pts | 0.6% | 157 |
| Summer peak (Jun 15 - Aug 15) | 66.7% | -10.1 pts | 0.5% | 895 |
| All other days | 76.7% | — | 0.5% | 2,769 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).