Best Time to Fly PHL to PWM: On-Time Stats by Hour & Airline
Philadelphia International → Portland International Jetport
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 77.0% of Philadelphia (PHL) to Portland (PWM) flights arrived on time (675 scheduled flights). That is 0.7 points below the national average of 77.6%.
American Airlines was the most punctual of the 2 airlines on the route at 77.1%, while PSA Airlines trailed at 76.4%.
November has been the best month (89% on time) and Thursday the weakest day of the week (69%).
3.3% of flights were cancelled, versus 1.8% nationally.
PHL to PWM 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 |
|---|---|---|---|---|
| American Airlines | 77.1% | 73 min | 1.2% | 493 |
| PSA Airlines | 76.4% | 95 min | 8.8% | 181 |
| Republic Airways | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PHL to PWM
On-time arrival % by scheduled departure hour (local time), 1,611 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | Limited data | 25 | |
| 9am–10am | 91.9% | 2.6% | 38 |
| 10am–11am | 79.9% | 2.5% | 321 |
| 11am–12pm | 75.0% | 0.0% | 52 |
| 12pm–1pm | 81.7% | 0.0% | 71 |
| 1pm–2pm | 79.7% | 1.5% | 195 |
| 2pm–3pm | 78.6% | 0.8% | 133 |
| 3pm–4pm | Limited data | 3 | |
| 4pm–5pm | 70.5% | 0.0% | 44 |
| 5pm–6pm | Limited data | 5 | |
| 6pm–7pm | 66.7% | 5.1% | 98 |
| 7pm–8pm | 63.2% | 1.7% | 117 |
| 8pm–9pm | 71.9% | 2.9% | 35 |
| 9pm–10pm | 72.1% | 5.2% | 462 |
| 10pm–11pm | Limited data | 12 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PHL to PWM
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) | 81.5% | +2.4 pts | 3.6% | 56 |
| Summer peak (Jun 15 - Aug 15) | 62.6% | -16.5 pts | 4.3% | 369 |
| All other days | 79.1% | — | 2.3% | 1,165 |
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).