OnTimeRoutes
B

United Airlines COS to ORD on-time performance

United Airlines nonstop flights from Colorado Springs to Chicago · Aug 2025 – Jul 2026

On-time arrivals
81%
arrived < 15 min late
Cancelled
2.2%
4 flights
Avg arrival delay
14 min
67 min when late
Rank on route
#1 of 2
route average 75% on time

Key facts

  • United Airlines flights on COS to ORD arrived on time 81% of the time in Aug 2025 – Jul 2026.
  • 2.2% were cancelled, and 7% arrived an hour or more late.
  • That ranks #1 of 2 airlines on this route, which averaged 75% on time overall.
  • The largest source of delay minutes was air traffic control & airport congestion (51%).

On-time trend by month

60%80%100%July 2025: 80.0% on time, 0.0% cancelledJul ’25August 2025: 76.7% on time, 3.1% cancelledAug ’25September 2025: 73.3% on time, 0.0% cancelledSep ’25October 2025: 92.0% on time, 0.0% cancelledOct ’25April 2026: 100.0% on time, 0.0% cancelledApr ’26May 2026: 83.9% on time, 0.0% cancelledMay ’26June 2026: 78.6% on time, 3.3% cancelledJun ’26July 2026: 82.1% on time, 6.5% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Air traffic control & airport congestion51%
  • Late-arriving aircraft23%
  • Airline (crew, maintenance, cleaning, fueling)22%
  • Extreme weather3%
  • Security0%

Other airlines on COS to ORD

180 United Airlines flights tracked on this route; 4 cancelled, 3 diverted.

Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.