Which departure time was most reliable for OAK to DEN?
Among qualifying OAK-to-DEN departure window results, Early morning had the highest on-time rate: 91.9% of 571 flights. Afternoon was lowest at 55.3% across 514 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 571 | 91.9% | 2.6% | 0.2% |
| Late morning | 221 | 75.6% | 13.6% | 0.9% |
| Afternoon | 514 | 55.3% | 26.3% | 0.6% |
| Evening | 300 | 62.0% | 25.7% | 0.3% |
Which weekday was most reliable for OAK to DEN?
Among qualifying OAK-to-DEN weekday results, Saturday had the highest on-time rate: 76.9% of 221 flights. Friday was lowest at 67.0% across 233 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 231 | 70.1% | 18.6% | 0.4% |
| Tuesday | 228 | 74.1% | 16.2% | 0.0% |
| Wednesday | 221 | 75.1% | 14.9% | 0.0% |
| Thursday | 229 | 72.9% | 16.6% | 1.7% |
| Friday | 233 | 67.0% | 16.3% | 0.0% |
| Saturday | 221 | 76.9% | 11.8% | 0.9% |
| Sunday | 244 | 70.5% | 17.6% | 0.0% |
Which airline was most reliable for OAK to DEN?
Only Southwest Airlines met the OAK-to-DEN airline threshold: 72.3% of 1,607 scheduled flights arrived on time during July 2025–June 2026.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 1,607 | 72.3% | 16.1% | 0.4% |
Which month was most reliable for OAK to DEN?
Among qualifying OAK-to-DEN month results, January 2026 had the highest on-time rate: 87.6% of 121 flights. June 2026 was lowest at 61.9% across 147 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 159 | 69.8% | 18.2% | 1.3% |
| August 2025 | 141 | 71.6% | 16.3% | 0.0% |
| September 2025 | 137 | 71.5% | 16.8% | 0.0% |
| October 2025 | 149 | 71.1% | 14.1% | 0.0% |
| November 2025 | 129 | 82.9% | 8.5% | 1.6% |
| December 2025 | 137 | 72.3% | 13.1% | 0.0% |
| January 2026 | 121 | 87.6% | 5.0% | 0.0% |
| February 2026 | 112 | 82.1% | 13.4% | 0.0% |
| March 2026 | 124 | 64.5% | 21.0% | 1.6% |
| April 2026 | 123 | 71.5% | 15.4% | 0.0% |
| May 2026 | 128 | 64.8% | 22.7% | 0.8% |
| June 2026 | 147 | 61.9% | 25.9% | 0.0% |
What drove OAK to DEN delay minutes?
Late aircraft was the largest recorded OAK-to-DEN delay category, accounting for 40.8% of 20,291 BTS-attributed delay minutes during July 2025–June 2026.
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