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

Aspen, CO (ASE) to Denver, CO (DEN) flight delay odds

Historically, 71.2% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,716 flights.

HISTORICAL ROUTE SIGNALHigher disruption
71.2%arrived on time
17.6%30+ min late
5.2%cancelled
2,716scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late12.7%all scheduled flights
120+ minutes late6.4%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+15.0 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Early morning59680.2%11.4%3.7%
Late morning63976.7%14.1%4.2%
Afternoon1,06364.9%23.3%5.4%
Evening41866.3%17.0%8.1%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday39568.6%19.0%5.3%
Tuesday38274.1%14.7%3.1%
Wednesday37676.9%13.0%3.7%
Thursday38772.1%17.8%4.1%
Friday39569.4%18.0%7.6%
Saturday38666.3%20.7%7.5%
Sunday39571.6%19.5%4.6%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines2,71671.2%17.6%5.2%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 202524551.4%31.8%6.5%
August 202524466.4%22.5%3.7%
September 202522678.3%15.0%0.0%
October 202521174.4%16.1%0.0%
November 202517982.1%8.4%3.9%
December 202526965.8%22.7%5.2%
January 202625073.6%16.0%7.2%
February 202625465.4%18.9%11.0%
March 202631076.1%9.4%10.6%
April 202622182.8%10.9%2.7%
May 20267588.0%6.7%0.0%
June 202623266.4%23.3%3.9%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline20.3%
Late aircraft28.6%
National airspace28.2%
Weather22.9%
Security0.0%
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.