Best Time to Fly PDX to SJC: On-Time Stats by Hour & Airline
Portland International → Norman Y. Mineta San Jose International
Data through July 2026 · Last updated October 18, 2026
1,672 flights were scheduled from Portland (PDX) to San Jose (SJC) in the last 12 months, and 82.0% of those that flew arrived on time, 4.4 points above the US average of 77.6%.
Alaska Airlines was the most punctual of the 3 airlines on the route at 88.9%, while Southwest Airlines trailed at 77.3%.
March has been the best month (88% on time) and Friday the weakest day of the week (78%).
0.2% of flights were cancelled, versus 1.8% nationally.
PDX to SJC 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 |
|---|---|---|---|---|
| Alaska Airlines | 88.9% | 52 min | 0.0% | 226 |
| SkyWest Airlines | 87.9% | 54 min | 0.0% | 499 |
| Southwest Airlines | 77.3% | 52 min | 0.4% | 947 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PDX to SJC
On-time arrival % by scheduled departure hour (local time), 3,760 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 98.6% | 0.0% | 72 |
| 6am–7am | 97.9% | 0.6% | 337 |
| 7am–8am | 95.0% | 0.7% | 305 |
| 8am–9am | 93.1% | 0.6% | 161 |
| 9am–10am | 92.7% | 0.0% | 178 |
| 10am–11am | 88.3% | 0.4% | 248 |
| 11am–12pm | 87.3% | 0.0% | 157 |
| 12pm–1pm | 81.8% | 0.0% | 121 |
| 1pm–2pm | 81.1% | 0.7% | 149 |
| 2pm–3pm | 87.0% | 0.3% | 637 |
| 3pm–4pm | 72.6% | 0.0% | 73 |
| 4pm–5pm | 85.6% | 0.0% | 243 |
| 5pm–6pm | 71.1% | 0.3% | 326 |
| 6pm–7pm | 71.1% | 0.0% | 97 |
| 7pm–8pm | 72.8% | 0.7% | 137 |
| 8pm–9pm | 66.1% | 0.0% | 295 |
| 9pm–10pm | 71.6% | 0.5% | 223 |
| 10pm–11pm | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PDX to SJC
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) | 84.8% | -0.6 pts | 0.0% | 66 |
| Christmas & New Year (Dec 20 - Jan 3) | 74.8% | -10.6 pts | 0.6% | 156 |
| Summer peak (Jun 15 - Aug 15) | 78.9% | -6.5 pts | 0.3% | 646 |
| All other days | 85.4% | — | 0.3% | 2,892 |
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).