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

Aspen, CO (ASE) to Chicago, IL (ORD) flight delay odds

Historically, 57.3% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,071 flights.

HISTORICAL ROUTE SIGNALHigher disruption
57.3%arrived on time
27.7%30+ min late
6.4%cancelled
1,071scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late18.8%all scheduled flights
120+ minutes late9.8%all scheduled flights
Diverted1.3%did not reach as scheduled
Average arrival+29.9 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 morning12472.6%21.8%3.2%
Late morning29161.2%22.7%4.5%
Afternoon65652.7%31.1%7.9%

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
Monday15761.8%25.5%4.5%
Tuesday13562.2%25.9%5.9%
Wednesday13268.9%19.7%3.0%
Thursday15861.4%27.2%3.8%
Friday16246.9%31.5%12.3%
Saturday16547.9%34.5%6.7%
Sunday16255.6%27.8%8.0%

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 Airlines1,07157.3%27.7%6.4%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 20256237.1%27.4%12.9%
August 20257560.0%28.0%4.0%
September 20259075.6%17.8%0.0%
October 20255666.1%21.4%0.0%
December 202511249.1%42.9%0.9%
January 202614652.7%29.5%8.9%
February 202616153.4%29.8%10.6%
March 202620459.8%26.5%8.8%
April 20266058.3%31.7%1.7%
May 20262080.0%10.0%0.0%
June 20268558.8%20.0%9.4%

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.

Airline21.1%
Late aircraft23.0%
National airspace22.0%
Weather33.9%
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.