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
Best time to fly from PWM to DEN
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 71% | 35 min |
| Tuesday | 71% | 13 min |
| Wednesday | 71% | 18 min |
| Thursdaybest | 79% | 10 min |
| Friday | 72% | 19 min |
| Saturday | 63% | 28 min |
| Sunday | 69% | 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.
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Based on 378 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.