FlightRecord

Portland (PWM) to Denver (DEN): On-Time Performance

Data through May 2026

Portland (PWM) to Denver (DEN) is a thinner route than most in this dataset — 220 departures over the past year, roughly 4 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 71% arrived on time, noticeably below the national average of 78%.

On-time
71%
arrived <15 min late
Avg delay
22 min
completed flights
Cancelled
0.3%
Flights/day
0.60
last 12 months
Duration
4h 37m
scheduled
Distance
1,782 mi

Monthly on-time trend

Monthly on-time percentage for PWM to DEN flights50%75%100%June 2024: 63% on-time (30 flights)63Jun 2024July 2024: 71% on-time (31 flights)71August 2024: 61% on-time (31 flights)61September 2024: 83% on-time (30 flights)83Sep 2024October 2024: 96% on-time (26 flights)96May 2025: 70% on-time (10 flights)70June 2025: 68% on-time (31 flights)68Jun 2025July 2025: 50% on-time (35 flights)50August 2025: 59% on-time (34 flights)59September 2025: 77% on-time (30 flights)77Sep 2025October 2025: 77% on-time (31 flights)77November 2025: 87% on-time (30 flights)87December 2025: 100% on-time (1 flights)100Dec 2025May 2026: 64% on-time (28 flights)64

Best time to fly from PWM to DEN

By day of week

DayOn-timeAvg delay
Monday71%35 min
Tuesday71%13 min
Wednesday71%18 min
Thursdaybest79%10 min
Friday72%19 min
Saturday63%28 min
Sunday69%31 min

What causes delays on this route

Share of total delay minutes by cause, as reported by carriers to the US DOT.

  • Late-arriving aircraft30%
  • Airline operations35%
  • National airspace system33%
  • Weather3%

Frequently asked questions

How often are flights from PWM to DEN delayed?
29% of PWM–DEN flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 22 minutes.
How long is the flight from PWM to DEN?
The scheduled PWM–DEN flight time averages 4h 37m over 1,782 miles. Actual arrival times vary — flights on this route land 15+ minutes late 29% of the time.
How often are PWM to DEN flights cancelled?
0.3% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
What is the worst month to fly from PWM to DEN?
July 2025 was the roughest month in this dataset, with only 50% of arrivals on time. The best was October 2024 at 96%. If your dates are flexible, that 46-point gap is worth planning around.

Based on 378 flights, 2024-062026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.