Which departure time was most reliable for PDX to OAK?
Among qualifying PDX-to-OAK departure window results, Early morning had the highest on-time rate: 95.2% of 330 flights. Night was lowest at 46.2% across 117 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 330 | 95.2% | 2.1% | 0.3% |
| Late morning | 321 | 81.3% | 8.1% | 0.9% |
| Afternoon | 261 | 69.0% | 14.9% | 0.8% |
| Evening | 250 | 67.2% | 18.0% | 0.4% |
| Night | 117 | 46.2% | 41.0% | 1.7% |
Which weekday was most reliable for PDX to OAK?
Among qualifying PDX-to-OAK weekday results, Wednesday had the highest on-time rate: 83.2% of 184 flights. Monday was lowest at 71.4% across 185 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 185 | 71.4% | 16.2% | 0.5% |
| Tuesday | 188 | 77.1% | 11.2% | 0.0% |
| Wednesday | 184 | 83.2% | 8.2% | 0.5% |
| Thursday | 180 | 72.2% | 11.7% | 1.1% |
| Friday | 186 | 74.7% | 16.7% | 0.0% |
| Saturday | 148 | 82.4% | 8.1% | 2.0% |
| Sunday | 208 | 75.0% | 16.8% | 1.0% |
Which airline was most reliable for PDX to OAK?
Among qualifying PDX-to-OAK airline results, SkyWest Airlines had the highest on-time rate: 89.0% of 82 flights. Southwest Airlines was lowest at 75.2% across 1,181 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 1,181 | 75.2% | 13.6% | 0.8% |
| SkyWest Airlines | 82 | 89.0% | 4.9% | 0.0% |
| Alaska Airlines | 16 | 100.0% | 0.0% | 0.0% |
Which month was most reliable for PDX to OAK?
Among qualifying PDX-to-OAK month results, January 2026 had the highest on-time rate: 92.7% of 96 flights. July 2025 was lowest at 58.8% across 119 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 119 | 58.8% | 21.8% | 1.7% |
| August 2025 | 104 | 79.8% | 13.5% | 0.0% |
| September 2025 | 99 | 70.7% | 10.1% | 0.0% |
| October 2025 | 107 | 74.8% | 15.0% | 0.0% |
| November 2025 | 112 | 77.7% | 10.7% | 5.4% |
| December 2025 | 121 | 78.5% | 8.3% | 0.0% |
| January 2026 | 96 | 92.7% | 4.2% | 0.0% |
| February 2026 | 97 | 86.6% | 6.2% | 1.0% |
| March 2026 | 100 | 75.0% | 14.0% | 0.0% |
| April 2026 | 89 | 77.5% | 11.2% | 0.0% |
| May 2026 | 111 | 79.3% | 12.6% | 0.0% |
| June 2026 | 124 | 70.2% | 23.4% | 0.0% |
What drove PDX to OAK delay minutes?
Late aircraft was the largest recorded PDX-to-OAK delay category, accounting for 69.8% of 15,079 BTS-attributed delay minutes during July 2025–June 2026.
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