Portland (PWM) to Philadelphia (PHL): On-Time Performance
Data through May 2026
When you fly PWM to PHL matters as much as anything else about the booking: the route swung from 92% on-time in May 2026 to just 64% in August 2024. Across the full period the route averages 77% on-time against a national 78%.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 25 min
- completed flights
- Cancelled
- 2.9%
- Flights/day
- 2.1
- last 12 months
- Duration
- 1h 39m
- scheduled
- Distance
- 364 mi
Best airline from PWM to PHL
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 93% | 4 min | 0.0% | 74 |
| American Airlines | 76% | 26 min | 2.4% | 1,153 |
| PSA Airlines | 76% | 25 min | 4.7% | 466 |
Monthly on-time trend
Best time to fly from PWM to PHL
Aim for departures around 11 a.m. (92% on-time); avoid 4 p.m. departures (52%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 19 min |
| Tuesdaybest | 83% | 21 min |
| Wednesday | 81% | 10 min |
| Thursday | 71% | 22 min |
| Friday | 72% | 35 min |
| Saturday | 80% | 33 min |
| Sunday | 75% | 34 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft39%
- Airline operations42%
- National airspace system17%
- Weather2%
Frequently asked questions
- How often are flights from PWM to PHL delayed?
- 23% of PWM–PHL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 25 minutes.
- Which airline is most reliable from PWM to PHL?
- Republic Airways has the best on-time record on this route at 93%, based on 74 flights. 3 airlines flew PWM–PHL frequently enough to compare in this period.
- What is the best time of day to fly from PWM to PHL?
- Departures around 11 a.m. have the best record (92% on-time), while departures around 4 p.m. have the worst (52%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PWM to PHL?
- The scheduled PWM–PHL flight time averages 1h 39m over 364 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are PWM to PHL flights cancelled?
- 2.9% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What is the worst month to fly from PWM to PHL?
- August 2024 was the roughest month in this dataset, with only 64% of arrivals on time. The best was May 2026 at 92%. If your dates are flexible, that 29-point gap is worth planning around.
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Based on 1,733 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.