Historical on-time performance
Portland to Detroit
Flights on PWM–DTW arrive on time 78% of the time over the last 12 months.
based on 403 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.
- Delta Air LinesOn-time79%Medianon timep9040 minCancel1.1%Flights355
- SkyWest AirlinesOn-time71%Medianon timep90115 minCancel0.0%Flights48
Why flights run late
Delay causes
- Airline41%
- Weather17%
- Air traffic (NAS)12%
- Late aircraft30%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline100%
- Weather0%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 4 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 → DTW
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 — 88% on time.
- Mornings88% on time · p90 10 min · 586 flights
- Middays78% on time · p90 45 min · 585 flights
- Afternoons75% on time · p90 50 min · 381 flights
- Evenings72% on time · p90 55 min · 262 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 85% on time.
- Wednesdays85% on time · p90 25 min · 249 flights
- Tuesdays82% on time · p90 45 min · 251 flights
- Thursdays82% on time · p90 35 min · 259 flights
- Saturdays81% on time · p90 35 min · 264 flights
- Mondays79% on time · p90 50 min · 264 flights
- Fridays78% on time · p90 45 min · 263 flights
- Sundays72% on time · p90 65 min · 264 flights
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