Route Reliability
Portland → Oakland
PDX–OAK · 543 miles · Portland International Airport to Oakland International Airport
- 81%
- Arrive within 15 minutes
- 5 min
- Average arrival delay
- 0.6%
- Cancelled
- 1,878
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Alaska Airlines89%674 flights
- 2.Southwest Airlines77%1,204 flights
What the data says
Morning flights do better here.
PDX–OAK flights departing between 3–6 AM arrived on time 97% of the time, versus 52% between 9 PM–12 AM.
Thursday is the weak spot.
PDX–OAK flights arrived on time 89% of the time on Saturdays. On Thursdays: 77%.
Alaska Airlines runs this route best.
Alaska Airlines arrived on time 89% of the time on this route; Southwest Airlines managed 77%.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon80%(279 flights)
- Tue81%(263 flights)
- Wed84%(260 flights)
- Thu77%(270 flights)
- Fri79%(277 flights)
- Sat89%(214 flights)
- Sun82%(302 flights)
- 3–6 AM97%(143 flights)
- 6–9 AM94%(527 flights)
- 9 AM–12 PM82%(322 flights)
- 12–3 PM70%(79 flights)
- 3–6 PM77%(504 flights)
- 6–9 PM66%(174 flights)
- 9 PM–12 AM52%(116 flights)
Jun 76% → May 83% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 76% | 177 |
| July 2025 | 73% | 177 |
| August 2025 | 80% | 166 |
| September 2025 | 79% | 159 |
| October 2025 | 80% | 162 |
| November 2025 | 85% | 146 |
| December 2025 | 80% | 159 |
| January 2026 | 90% | 146 |
| February 2026 | 87% | 127 |
| March 2026 | 82% | 143 |
| April 2026 | 85% | 149 |
| May 2026 | 83% | 154 |
Same trip, other airports
Keep nerding
Based on 1,878 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.