Best Time to Fly OAK to DEN: On-Time Stats by Hour & Airline
Oakland International → Denver International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 72.4% of Oakland (OAK) to Denver (DEN) flights arrived on time (1,602 scheduled flights). That is 5.3 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 (81% on time) and June the worst month (65%).
The cancellation rate was 0.3% (US average 1.8%).
OAK to DEN 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 | 72.4% | 46 min | 0.3% | 1,602 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly OAK to DEN
On-time arrival % by scheduled departure hour (local time), 3,337 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 93.5% | 0.0% | 520 |
| 6am–7am | 91.8% | 0.5% | 185 |
| 7am–8am | 95.3% | 0.0% | 64 |
| 8am–9am | 90.6% | 0.0% | 403 |
| 9am–10am | 89.1% | 0.0% | 212 |
| 10am–11am | 91.5% | 0.0% | 59 |
| 11am–12pm | 71.0% | 1.1% | 183 |
| 12pm–1pm | 71.8% | 0.0% | 244 |
| 1pm–2pm | 63.2% | 0.0% | 203 |
| 2pm–3pm | 52.6% | 0.4% | 268 |
| 3pm–4pm | 60.3% | 0.0% | 189 |
| 4pm–5pm | 66.7% | 2.0% | 98 |
| 5pm–6pm | 69.2% | 0.0% | 94 |
| 6pm–7pm | 83.9% | 0.0% | 137 |
| 7pm–8pm | 63.6% | 0.0% | 324 |
| 8pm–9pm | 70.3% | 0.7% | 146 |
| 9pm–10pm | Limited data | 8 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on OAK to DEN
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) | 82.3% | +3.8 pts | 0.0% | 68 |
| Christmas & New Year (Dec 20 - Jan 3) | 81.6% | +3.0 pts | 0.0% | 147 |
| Summer peak (Jun 15 - Aug 15) | 69.8% | -8.8 pts | 0.3% | 624 |
| All other days | 78.6% | — | 0.2% | 2,498 |
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).