Best Time to Fly OAK to PDX: On-Time Stats by Hour & Airline
Oakland International → Portland International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 80.4% of Oakland (OAK) to Portland (PDX) flights arrived on time (1,305 scheduled flights). That is 2.8 points above the national average of 77.6%.
Among 2 airlines, SkyWest Airlines led with 87.8% on time and Southwest Airlines was last with 79.3%.
Over 24 months, Tuesday was the most reliable day (90% on time) and June the worst month (73%).
The cancellation rate was 0.4% (US average 1.8%).
OAK to PDX 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 |
|---|---|---|---|---|
| SkyWest Airlines | 87.8% | 45 min | 0.0% | 131 |
| Southwest Airlines | 79.3% | 52 min | 0.4% | 1,158 |
| Alaska Airlines | Limited data | 16 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly OAK to PDX
On-time arrival % by scheduled departure hour (local time), 2,752 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 99.4% | 0.6% | 176 |
| 6am–7am | 99.2% | 0.0% | 120 |
| 7am–8am | 96.9% | 1.2% | 161 |
| 8am–9am | 94.4% | 0.5% | 199 |
| 9am–10am | 97.8% | 0.0% | 136 |
| 10am–11am | 86.5% | 1.3% | 157 |
| 11am–12pm | 81.9% | 0.0% | 116 |
| 12pm–1pm | 92.1% | 0.0% | 228 |
| 1pm–2pm | 81.6% | 0.0% | 87 |
| 2pm–3pm | 80.1% | 0.0% | 147 |
| 3pm–4pm | 67.0% | 0.0% | 118 |
| 4pm–5pm | 61.5% | 0.0% | 39 |
| 5pm–6pm | 74.0% | 0.0% | 196 |
| 6pm–7pm | 79.8% | 0.0% | 263 |
| 7pm–8pm | 78.8% | 0.0% | 199 |
| 8pm–9pm | 69.9% | 0.3% | 300 |
| 9pm–10pm | 50.0% | 0.0% | 82 |
| 10pm–11pm | Limited data | 28 | |
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 PDX
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) | 79.0% | -6.4 pts | 0.0% | 57 |
| Christmas & New Year (Dec 20 - Jan 3) | 64.2% | -21.1 pts | 0.0% | 123 |
| Summer peak (Jun 15 - Aug 15) | 77.6% | -7.8 pts | 0.2% | 492 |
| All other days | 85.4% | — | 0.3% | 2,080 |
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).