Best Time to Fly PWM to DEN: On-Time Stats by Hour & Airline
Portland International Jetport → Denver International
Data through July 2026 · Last updated October 18, 2026
214 flights were scheduled from Portland (PWM) to Denver (DEN) in the last 12 months, and 71.4% of those that flew arrived on time, 6.3 points below the US average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Friday was the most reliable day (77% on time) and July the worst month (59%).
The cancellation rate was 0.0% (US average 1.8%).
PWM to DEN on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| United Airlines | 71.4% | 76 min | 0.0% | 214 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PWM to DEN
On-time arrival % by scheduled departure hour (local time), 377 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | Limited data | 9 | |
| 3pm–4pm | 72.1% | 0.3% | 368 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PWM to DEN
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 7 | ||
| Summer peak (Jun 15 - Aug 15) | 60.0% | -18.4 pts | 0.8% | 130 |
| All other days | 78.4% | — | 0.0% | 240 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).