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Route Reliability

Portland → Denver

PWM–DEN · 1,782 miles · Portland International Jetport to Denver International Airport

61
A Little Dicey
WanderNerd Reliability Score
72%
Arrive within 15 minutes
19 min
Average arrival delay
0.5%
Cancelled
220
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 72% of the time across 220 flights. No comparison to make.

What the data says

Saturdays have been rough.

PWM–DEN flights arrived on time 86% of the time on Tuesdays and just 60% on Saturdays. That gap is worth planning around.

Trending in the right direction.

PWM–DEN flights arrived on time 76% of the time over the last three months in the data, compared with 67% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon69%(29 flights)
  • Tue86%(28 flights)
  • Wed70%(30 flights)
  • Thu75%(28 flights)
  • Fri79%(29 flights)
  • Sat60%(30 flights)
  • Sun68%(38 flights)
On-time by departure window
  • 6–9 AM—(9 flights)
  • 3–6 PM72%(203 flights)
On-time trend by month
64%
May

Jun 75% → May 64% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%28
July 202558%31
August 202565%34
September 202579%29
October 202577%31
November 202587%30
May 202664%28

Keep nerding

Based on 220 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.