Historical on-time performance
Portland to Philadelphia
Flights on PWM–PHL arrive on time 74% of the time over the last 12 months.
based on 664 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- American AirlinesOn-time74%Medianon timep9045 minCancel2.1%Flights532
- PSA AirlinesOn-time72%Medianon timep9095 minCancel10.6%Flights132
Why flights run late
Delay causes
- Airline27%
- Weather4%
- Air traffic (NAS)25%
- Late aircraft44%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline12%
- Weather80%
- Air traffic (NAS)8%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 25 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly PWM → PHL
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 84% on time.
- Mornings84% on time · p90 15 min · 982 flights
- Middays80% on time · p90 35 min · 825 flights
- Afternoons60% on time · p90 70 min · 684 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 81% on time.
- Tuesdays81% on time · p90 30 min · 366 flights
- Wednesdays80% on time · p90 30 min · 342 flights
- Saturdays78% on time · p90 50 min · 361 flights
- Fridays75% on time · p90 55 min · 357 flights
- Mondays74% on time · p90 45 min · 354 flights
- Thursdays72% on time · p90 60 min · 362 flights
- Sundays72% on time · p90 70 min · 363 flights
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