Best Time to Fly SAN to OAK: On-Time Stats by Hour & Airline
San Diego International → Oakland International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 74.3% of San Diego (SAN) to Oakland (OAK) flights arrived on time (3,203 scheduled flights). That is 3.3 points below the national average of 77.6%.
Spirit Airlines was the most punctual of the 3 airlines on the route at 89.5%, while Southwest Airlines trailed at 74.0%.
January has been the best month (86% on time) and Friday the weakest day of the week (67%).
1.0% of flights were cancelled, versus 1.8% nationally.
SAN 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 |
|---|---|---|---|---|
| Spirit Airlines | 89.5% | 56 min | 0.0% | 38 |
| SkyWest Airlines | 75.7% | 55 min | 1.1% | 262 |
| Southwest Airlines | 74.0% | 49 min | 1.0% | 2,903 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SAN to OAK
On-time arrival % by scheduled departure hour (local time), 6,623 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 97.2% | 1.7% | 295 |
| 7am–8am | 91.4% | 0.8% | 482 |
| 8am–9am | 90.2% | 1.6% | 581 |
| 9am–10am | 83.1% | 0.7% | 405 |
| 10am–11am | 85.6% | 0.7% | 427 |
| 11am–12pm | 79.7% | 0.6% | 352 |
| 12pm–1pm | 71.7% | 1.8% | 385 |
| 1pm–2pm | 76.0% | 0.9% | 463 |
| 2pm–3pm | 72.1% | 1.7% | 408 |
| 3pm–4pm | 73.7% | 0.3% | 374 |
| 4pm–5pm | 72.2% | 1.2% | 571 |
| 5pm–6pm | 62.5% | 0.0% | 253 |
| 6pm–7pm | 65.8% | 0.7% | 421 |
| 7pm–8pm | 67.2% | 1.4% | 415 |
| 8pm–9pm | 57.9% | 2.3% | 518 |
| 9pm–10pm | 57.3% | 1.4% | 221 |
| 10pm–11pm | 69.4% | 5.8% | 52 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SAN 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) | 73.9% | -4.1 pts | 0.0% | 134 |
| Christmas & New Year (Dec 20 - Jan 3) | 57.9% | -20.1 pts | 4.7% | 274 |
| Summer peak (Jun 15 - Aug 15) | 70.9% | -7.0 pts | 0.8% | 1,178 |
| All other days | 78.0% | — | 1.1% | 5,037 |
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).