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

Chicago, IL (ORD) to Colorado Springs, CO (COS) flight delay odds

67.9% of 1,001 official scheduled ORD-to-COS flights arrived on time; 19.3% arrived at least 30 minutes late and 2.0% 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 SIGNALVariable
67.9%arrived on time
19.3%30+ min late
2.0%cancelled
1,001scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.8%all scheduled flights
120+ minutes late4.6%all scheduled flights
Diverted0.5%did not reach as scheduled
Average arrival+15.2 mincompleted flights

Which departure time was most reliable for ORD to COS?

Among qualifying ORD-to-COS departure window results, Early morning had the highest on-time rate: 77.2% of 127 flights. Evening was lowest at 57.9% across 278 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning12777.2%15.7%0.8%
Late morning59370.5%18.9%1.5%
Evening27857.9%21.9%3.6%

Which weekday was most reliable for ORD to COS?

Among qualifying ORD-to-COS weekday results, Wednesday had the highest on-time rate: 74.5% of 141 flights. Friday was lowest at 57.3% across 143 flights.

DayFlightsOn time30+ minCancelled
Monday14463.2%21.5%3.5%
Tuesday14669.9%15.1%1.4%
Wednesday14174.5%15.6%1.4%
Thursday14070.0%20.0%1.4%
Friday14357.3%23.8%2.1%
Saturday14469.4%18.8%2.8%
Sunday14371.3%20.3%1.4%

Which airline was most reliable for ORD to COS?

Among qualifying ORD-to-COS airline results, United Airlines had the highest on-time rate: 82.1% of 179 flights. SkyWest Airlines was lowest at 64.8% across 822 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines82264.8%21.4%2.3%
United Airlines17982.1%9.5%0.6%

Which month was most reliable for ORD to COS?

Among qualifying ORD-to-COS month results, September 2025 had the highest on-time rate: 85.6% of 90 flights. December 2025 was lowest at 52.2% across 90 flights.

MonthFlightsOn time30+ minCancelled
July 20259359.1%28.0%1.1%
August 20259374.2%9.7%3.2%
September 20259085.6%7.8%1.1%
October 20259366.7%21.5%0.0%
November 20258870.5%18.2%1.1%
December 20259052.2%28.9%1.1%
January 20266759.7%29.9%1.5%
February 20265671.4%21.4%0.0%
March 20266365.1%22.2%3.2%
April 20268569.4%21.2%3.5%
May 20269378.5%10.8%3.2%
June 20269061.1%16.7%4.4%

What drove ORD to COS delay minutes?

Airline was the largest recorded ORD-to-COS delay category, accounting for 38.9% of 21,122 BTS-attributed delay minutes during July 2025–June 2026.

Airline38.9%
Late aircraft28.0%
National airspace19.3%
Weather13.8%
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.