Best Time to Fly DEN to SJC: On-Time Stats by Hour & Airline
Denver International → Norman Y. Mineta San Jose International
Data through July 2026 · Last updated October 18, 2026
2,560 flights were scheduled from Denver (DEN) to San Jose (SJC) in the last 12 months, and 74.1% of those that flew arrived on time, 3.5 points below the US average of 77.6%.
Among 3 airlines, United Airlines led with 80.9% on time and Southwest Airlines was last with 69.5%.
Over 24 months, Wednesday was the most reliable day (79% on time) and June the worst month (58%).
The cancellation rate was 0.3% (US average 1.8%).
DEN 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 |
|---|---|---|---|---|
| United Airlines | 80.9% | 62 min | 0.0% | 988 |
| Frontier Airlines | 80.4% | 26 min | 0.0% | 46 |
| Southwest Airlines | 69.5% | 51 min | 0.6% | 1,526 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to SJC
On-time arrival % by scheduled departure hour (local time), 5,700 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 5 | |
| 6am–7am | 91.0% | 0.0% | 67 |
| 7am–8am | 89.2% | 0.0% | 259 |
| 8am–9am | 94.1% | 0.3% | 576 |
| 9am–10am | 81.9% | 0.0% | 271 |
| 10am–11am | 84.8% | 0.0% | 276 |
| 11am–12pm | 79.9% | 0.0% | 713 |
| 12pm–1pm | 78.9% | 0.5% | 186 |
| 1pm–2pm | 79.3% | 0.2% | 407 |
| 2pm–3pm | 80.0% | 0.0% | 135 |
| 3pm–4pm | 74.7% | 0.0% | 365 |
| 4pm–5pm | 79.3% | 0.0% | 478 |
| 5pm–6pm | 60.0% | 0.0% | 95 |
| 6pm–7pm | 52.9% | 1.2% | 243 |
| 7pm–8pm | 68.5% | 0.3% | 929 |
| 8pm–9pm | 63.2% | 0.0% | 381 |
| 9pm–10pm | 57.9% | 1.6% | 314 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DEN 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) | 83.6% | +4.2 pts | 0.0% | 128 |
| Christmas & New Year (Dec 20 - Jan 3) | 71.5% | -7.9 pts | 0.0% | 232 |
| Summer peak (Jun 15 - Aug 15) | 61.4% | -18.0 pts | 0.5% | 977 |
| All other days | 79.4% | — | 0.2% | 4,363 |
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).