Colorado Springs to Chicago

What the Data Says About COS to ORD

The Colorado Springs to Chicago corridor (COS → ORD) covers roughly 911 miles and is served by 11 carriers, based on Bureau of Transportation Statistics reporting. Across 4,213 flights in the dataset, this route posts a 85.8% on-time rate with an average delay of 105.5 minutes when flights run late. Over the most recent 24 months of BTS data, 1,510 flights were recorded on this pairing — 11 cancelled (0.7%) and 8 diverted (0.5%). Those baseline metrics tell you what to expect before you book.

Having 11 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 4,213 total flights analyzed, the 85.8% on-time figure is statistically meaningful rather than a small-sample fluke. The 105.5-minute average delay applies only to flights that actually ran late, so it is not the average wait across all departures — the majority of flights on this route depart on time under the BTS definition of a delay (15+ minutes past schedule).

Looking at recent months, Sep 2024 posted the best performance on this corridor at 100% on-time, while Jul 2025 came in at 68% on-time — a 32-point gap between best and worst recent month. For travelers evaluating the COS to ORD route, the combination of a 85.8% on-time rate, 105.5-minute average delay, 0.7% recent cancellation rate, and 11 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.