BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
PDX→DEN

Portland, OR (PDX) to Denver, CO (DEN) flight delay odds

80.0% of 4,290 official scheduled PDX-to-DEN flights arrived on time; 11.6% arrived at least 30 minutes late and 0.4% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
80.0%arrived on time
11.6%30+ min late
0.4%cancelled
4,290scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.3%all scheduled flights
120+ minutes late1.7%all scheduled flights
Diverted0.5%did not reach as scheduled
Average arrival+3.7 mincompleted flights

Which departure time was most reliable for PDX to DEN?

Among qualifying PDX-to-DEN departure window results, Early morning had the highest on-time rate: 90.9% of 1,750 flights. Evening was lowest at 70.7% across 515 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,75090.9%4.6%0.3%
Late morning41080.2%8.3%0.2%
Afternoon1,60071.2%16.6%0.6%
Evening51570.7%22.1%0.6%

Which weekday was most reliable for PDX to DEN?

Among qualifying PDX-to-DEN weekday results, Sunday had the highest on-time rate: 84.8% of 639 flights. Thursday was lowest at 77.1% across 652 flights.

DayFlightsOn time30+ minCancelled
Monday64978.9%13.9%0.2%
Tuesday58080.7%9.7%0.2%
Wednesday57877.9%12.6%0.3%
Thursday65277.1%13.5%0.6%
Friday65979.1%12.6%0.9%
Saturday53382.2%10.5%0.6%
Sunday63984.8%8.1%0.3%

Which airline was most reliable for PDX to DEN?

Among qualifying PDX-to-DEN airline results, United Airlines had the highest on-time rate: 89.2% of 1,820 flights. Southwest Airlines was lowest at 71.7% across 1,563 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines1,82089.2%6.7%0.5%
Southwest Airlines1,56371.7%15.4%0.3%
Alaska Airlines58276.3%14.3%0.3%
Frontier Airlines31276.3%15.7%1.0%
SkyWest Airlines1369.2%23.1%0.0%

Which month was most reliable for PDX to DEN?

Among qualifying PDX-to-DEN month results, April 2026 had the highest on-time rate: 88.1% of 303 flights. July 2025 was lowest at 61.6% across 461 flights.

MonthFlightsOn time30+ minCancelled
July 202546161.6%22.3%1.3%
August 202543674.3%16.5%0.5%
September 202539577.5%12.9%0.3%
October 202539585.8%8.1%0.0%
November 202534488.1%3.5%2.0%
December 202534676.0%16.5%0.3%
January 202627087.4%5.2%0.4%
February 202624586.1%8.6%0.4%
March 202629388.1%8.2%0.0%
April 202630388.1%6.6%0.0%
May 202636783.7%8.2%0.0%
June 202643577.2%14.3%0.0%

What drove PDX to DEN delay minutes?

Late aircraft was the largest recorded PDX-to-DEN delay category, accounting for 36.2% of 44,945 BTS-attributed delay minutes during July 2025–June 2026.

Airline27.0%
Late aircraft36.2%
National airspace34.6%
Weather1.8%
Security0.4%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.