Historical on-time performance
Portland to Denver
1,782 miData through Dec 2025Source: US DOT · BTS
Flights on PWM–DEN arrive on time 69% of the time over the last 12 months.
On-time rate69%arrived within 15 min
p90 delay75 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 191 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time69%Medianon timep9075 minCancel0.5%Flights191
Why flights run late
Delay causes
- Airline27%
- Weather1%
- Air traffic (NAS)34%
- Late aircraft38%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly PWM → DEN
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best day of week
On-time rates are fairly even by day on this route — ranging from 60% to 79% on time.
- Thursdays79% on time · p90 50 min · 63 flights · limited
- Mondays72% on time · p90 35 min · 64 flights · limited
- Wednesdays71% on time · p90 60 min · 62 flights · limited
- Fridays70% on time · p90 90 min · 66 flights · limited
- Tuesdays69% on time · p90 50 min · 62 flights · limited
- Sundays67% on time · p90 95 min · 72 flights · limited
- Saturdays60% on time · p90 65 min · 65 flights · limited
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