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

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

55.6% of 1,072 official scheduled ORD-to-ASE flights arrived on time; 27.1% arrived at least 30 minutes late and 3.0% 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
55.6%arrived on time
27.1%30+ min late
3.0%cancelled
1,072scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late16.4%all scheduled flights
120+ minutes late8.4%all scheduled flights
Diverted5.3%did not reach as scheduled
Average arrival+31.7 mincompleted flights

Which departure time was most reliable for ORD to ASE?

Among qualifying ORD-to-ASE departure window results, Evening had the highest on-time rate: 64.1% of 170 flights. Afternoon was lowest at 50.5% across 281 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning17058.8%22.9%1.8%
Late morning45154.3%30.4%1.3%
Afternoon28150.5%31.7%5.3%
Evening17064.1%14.7%4.7%

Which weekday was most reliable for ORD to ASE?

Among qualifying ORD-to-ASE weekday results, Tuesday had the highest on-time rate: 65.9% of 135 flights. Friday was lowest at 41.1% across 163 flights.

DayFlightsOn time30+ minCancelled
Monday15759.2%24.2%2.5%
Tuesday13565.9%22.2%1.5%
Wednesday13163.4%21.4%3.1%
Thursday16157.8%28.0%1.9%
Friday16341.1%29.4%5.5%
Saturday16552.7%33.3%1.8%
Sunday16052.5%28.8%4.4%

Which airline was most reliable for ORD to ASE?

Only SkyWest Airlines met the ORD-to-ASE airline threshold: 55.6% of 1,072 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines1,07255.6%27.1%3.0%

Which month was most reliable for ORD to ASE?

Among qualifying ORD-to-ASE month results, May 2026 had the highest on-time rate: 85.7% of 21 flights. December 2025 was lowest at 43.0% across 114 flights.

MonthFlightsOn time30+ minCancelled
July 20256250.0%24.2%3.2%
August 20257566.7%16.0%1.3%
September 20259082.2%10.0%0.0%
October 20255563.6%10.9%0.0%
December 202511443.0%41.2%0.0%
January 202614644.5%38.4%4.1%
February 202616145.3%38.5%4.3%
March 202620462.3%25.0%4.9%
April 20265860.3%20.7%1.7%
May 20262185.7%0.0%0.0%
June 20268645.3%23.3%5.8%

What drove ORD to ASE delay minutes?

Airline was the largest recorded ORD-to-ASE delay category, accounting for 30.1% of 37,252 BTS-attributed delay minutes during July 2025–June 2026.

Airline30.1%
Late aircraft20.4%
National airspace30.0%
Weather19.5%
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.