Historical on-time performance
Detroit to Portland
Flights on DTW–PWM arrive on time 84% 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-time85%Medianon timep9030 minCancel0.8%Flights355
- SkyWest AirlinesOn-time73%Medianon timep90105 minCancel0.0%Flights48
Why flights run late
Delay causes
- Airline69%
- Weather1%
- Air traffic (NAS)15%
- Late aircraft16%
- 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 3 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 DTW → PWM
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 79% to 83% on time.
- Middays83% on time · p90 30 min · 575 flights
- Overnights80% on time · p90 40 min · 557 flights
- Afternoons79% on time · p90 40 min · 658 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 86% on time.
- Wednesdays86% on time · p90 20 min · 249 flights
- Saturdays84% on time · p90 25 min · 264 flights
- Tuesdays82% on time · p90 45 min · 250 flights
- Thursdays80% on time · p90 35 min · 258 flights
- Fridays80% on time · p90 45 min · 263 flights
- Mondays78% on time · p90 45 min · 265 flights
- Sundays73% on time · p90 50 min · 263 flights
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