Historical on-time performance
Philadelphia to Portland
Flights on PHL–PWM arrive on time 69% of the time over the last 12 months.
based on 665 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-time70%Medianon timep9080 minCancel1.9%Flights534
- PSA AirlinesOn-time68%Medianon timep90105 minCancel9.2%Flights131
Why flights run late
Delay causes
- Airline33%
- Weather5%
- Air traffic (NAS)12%
- Late aircraft49%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline14%
- Weather77%
- Air traffic (NAS)9%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 22 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 PHL → PWM
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Middays are the most reliable time of day to fly this route — 79% on time.
- Middays79% on time · p90 40 min · 1,129 flights
- Afternoons73% on time · p90 40 min · 301 flights
- Overnights68% on time · p90 75 min · 738 flights
- Evenings62% on time · p90 90 min · 245 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 81% on time.
- Wednesdays81% on time · p90 35 min · 344 flights
- Tuesdays80% on time · p90 40 min · 360 flights
- Mondays74% on time · p90 55 min · 355 flights
- Fridays74% on time · p90 45 min · 360 flights
- Saturdays72% on time · p90 65 min · 359 flights
- Sundays69% on time · p90 65 min · 362 flights
- Thursdays69% on time · p90 75 min · 368 flights
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