Best Time to Fly PWM to PHL: On-Time Stats by Hour & Airline
Portland International Jetport → Philadelphia International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 79.7% of Portland (PWM) to Philadelphia (PHL) flights arrived on time (676 scheduled flights). That is 2.1 points above the national average of 77.6%.
PSA Airlines was the most punctual of the 2 airlines on the route at 80.4%, while American Airlines trailed at 79.5%.
November has been the best month (92% on time) and Thursday the weakest day of the week (73%).
3.4% of flights were cancelled, versus 1.8% nationally.
PWM 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 |
|---|---|---|---|---|
| PSA Airlines | 80.4% | 159 min | 9.4% | 181 |
| American Airlines | 79.5% | 83 min | 1.2% | 494 |
| Republic Airways | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PWM to PHL
On-time arrival % by scheduled departure hour (local time), 1,611 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 83.1% | 5.5% | 163 |
| 6am–7am | 87.9% | 5.2% | 307 |
| 7am–8am | 84.7% | 2.6% | 154 |
| 8am–9am | 91.3% | 0.8% | 128 |
| 10am–11am | Limited data | 1 | |
| 11am–12pm | 89.6% | 2.0% | 49 |
| 12pm–1pm | 83.0% | 2.2% | 276 |
| 1pm–2pm | 70.0% | 2.4% | 123 |
| 2pm–3pm | 79.0% | 2.6% | 39 |
| 3pm–4pm | 57.7% | 0.8% | 124 |
| 4pm–5pm | 54.6% | 2.1% | 233 |
| 6pm–7pm | Limited data | 9 | |
| 7pm–8pm | Limited data | 5 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PWM to PHL
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) | Limited data | 21 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 77.8% | -2.2 pts | 3.6% | 56 |
| Summer peak (Jun 15 - Aug 15) | 69.1% | -10.9 pts | 4.6% | 368 |
| All other days | 80.0% | — | 2.4% | 1,166 |
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).