Best Time to Fly DEN to OAK: On-Time Stats by Hour & Airline
Denver International → Oakland International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 66.0% of Denver (DEN) to Oakland (OAK) flights arrived on time (1,605 scheduled flights). That is 11.6 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Wednesday was the most reliable day (71% on time) and June the worst month (49%).
The cancellation rate was 0.6% (US average 1.8%).
DEN 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 |
|---|---|---|---|---|
| Southwest Airlines | 66.0% | 49 min | 0.6% | 1,605 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to OAK
On-time arrival % by scheduled departure hour (local time), 3,341 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 2 | |
| 6am–7am | 94.4% | 1.1% | 180 |
| 7am–8am | 83.1% | 0.5% | 208 |
| 8am–9am | 89.4% | 0.0% | 292 |
| 9am–10am | 81.0% | 0.0% | 190 |
| 10am–11am | 74.3% | 0.0% | 171 |
| 11am–12pm | 77.9% | 0.0% | 95 |
| 12pm–1pm | 72.0% | 1.0% | 101 |
| 1pm–2pm | 77.6% | 0.9% | 329 |
| 2pm–3pm | 57.8% | 0.6% | 162 |
| 3pm–4pm | 73.5% | 0.0% | 211 |
| 4pm–5pm | 60.0% | 0.0% | 115 |
| 5pm–6pm | 55.8% | 0.0% | 104 |
| 6pm–7pm | 57.2% | 1.6% | 247 |
| 7pm–8pm | 45.8% | 0.6% | 180 |
| 8pm–9pm | 56.2% | 0.6% | 334 |
| 9pm–10pm | 54.8% | 0.5% | 187 |
| 10pm–11pm | 49.1% | 0.4% | 233 |
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 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) | 68.1% | -4.3 pts | 0.0% | 69 |
| Christmas & New Year (Dec 20 - Jan 3) | 57.9% | -14.5 pts | 0.7% | 146 |
| Summer peak (Jun 15 - Aug 15) | 55.9% | -16.6 pts | 1.0% | 625 |
| All other days | 72.5% | — | 0.4% | 2,501 |
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).