Best Time to Fly PDX to PHL: On-Time Stats by Hour & Airline
Portland International → Philadelphia International
Data through July 2026 · Last updated October 18, 2026
262 flights were scheduled from Portland (PDX) to Philadelphia (PHL) in the last 12 months, and 86.3% of those that flew arrived on time, 8.7 points above the US average of 77.6%.
Among 2 airlines, Alaska Airlines led with 91.1% on time and American Airlines was last with 84.2%.
Over 24 months, Sunday was the most reliable day (98% on time) and July the worst month (84%).
The cancellation rate was 1.9% (US average 1.8%).
PDX to PHL 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 |
|---|---|---|---|---|
| Alaska Airlines | 91.1% | 45 min | 0.0% | 80 |
| American Airlines | 84.2% | 69 min | 2.8% | 182 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PDX to PHL
On-time arrival % by scheduled departure hour (local time), 348 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 91.1% | 0.0% | 80 |
| 8am–9am | Limited data | 1 | |
| 12pm–1pm | 82.1% | 1.5% | 68 |
| 10pm–11pm | 84.0% | 4.0% | 124 |
| 11pm–12am | 82.9% | 6.7% | 75 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PDX to PHL
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 8 | ||
| Summer peak (Jun 15 - Aug 15) | 83.9% | -3.2 pts | 4.2% | 215 |
| All other days | 87.1% | — | 0.8% | 125 |
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).