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

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

57.3% of 1,071 official scheduled ASE-to-ORD flights arrived on time; 27.7% arrived at least 30 minutes late and 6.4% 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 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

Which departure time was most reliable for ASE to ORD?

Among qualifying ASE-to-ORD departure window results, Early morning had the highest on-time rate: 72.6% of 124 flights. Afternoon was lowest at 52.7% across 656 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning12472.6%21.8%3.2%
Late morning29161.2%22.7%4.5%
Afternoon65652.7%31.1%7.9%

Which weekday was most reliable for ASE to ORD?

Among qualifying ASE-to-ORD weekday results, Wednesday had the highest on-time rate: 68.9% of 132 flights. Friday was lowest at 46.9% across 162 flights.

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%

Which airline was most reliable for ASE to ORD?

Only SkyWest Airlines met the ASE-to-ORD airline threshold: 57.3% of 1,071 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines1,07157.3%27.7%6.4%

Which month was most reliable for ASE to ORD?

Among qualifying ASE-to-ORD month results, May 2026 had the highest on-time rate: 80.0% of 20 flights. July 2025 was lowest at 37.1% across 62 flights.

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 ASE to ORD delay minutes?

Weather was the largest recorded ASE-to-ORD delay category, accounting for 33.9% of 36,919 BTS-attributed delay minutes during July 2025–June 2026.

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.