Best Time to Fly DEN to PWM: On-Time Stats by Hour & Airline
Denver International → Portland International Jetport
Data through July 2026 · Last updated October 18, 2026
214 flights were scheduled from Denver (DEN) to Portland (PWM) in the last 12 months, and 83.2% of those that flew arrived on time, 5.6 points above the US average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
November has been the best month (97% on time) and Sunday the weakest day of the week (73%).
0.0% of flights were cancelled, versus 1.8% nationally.
DEN to PWM 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 | 83.2% | 33 min | 0.0% | 214 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to PWM
On-time arrival % by scheduled departure hour (local time), 377 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | 82.2% | 0.0% | 332 |
| 10am–11am | 94.6% | 0.0% | 37 |
| 5pm–6pm | Limited data | 8 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DEN to PWM
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) | 76.2% | -10.5 pts | 0.0% | 130 |
| All other days | 86.7% | — | 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).