Historical on-time performance
Detroit to Portland
1,953 miData through Dec 2025Source: US DOT · BTS
Flights on DTW–PDX arrive on time 69% of the time over the last 12 months.
On-time rate69%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights
based on 309 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time69%Medianon timep9040 minCancel0.6%Flights309
Why flights run late
Delay causes
- Airline50%
- Weather2%
- Air traffic (NAS)24%
- Late aircraft25%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly DTW → PDX
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 68% to 84% on time.
- Mornings84% on time · p90 20 min · 534 flights
- Evenings76% on time · p90 55 min · 113 flights · limited
- Overnights68% on time · p90 45 min · 302 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 83% on time.
- Tuesdays83% on time · p90 25 min · 120 flights · limited
- Mondays82% on time · p90 30 min · 136 flights · limited
- Wednesdays80% on time · p90 35 min · 121 flights · limited
- Saturdays77% on time · p90 40 min · 120 flights · limited
- Fridays76% on time · p90 30 min · 156 flights · limited
- Sundays76% on time · p90 50 min · 160 flights · limited
- Thursdays75% on time · p90 40 min · 153 flights · limited
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