Chicago to Aspen

What the Data Says About ORD to ASE

The Chicago to Aspen corridor (ORD → ASE) covers roughly 1,013 miles and is served by 1 carrier, based on Bureau of Transportation Statistics reporting. Across 5,190 flights in the dataset, this route posts a 70.7% on-time rate with an average delay of 94.9 minutes when flights run late. Over the most recent 24 months of BTS data, 2,167 flights were recorded on this pairing — 53 cancelled (2.4%) and 129 diverted (6.0%). Those baseline metrics tell you what to expect before you book.

Having 1 carrier on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 5,190 total flights analyzed, the 70.7% on-time figure is statistically meaningful rather than a small-sample fluke. The 94.9-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, Oct 2024 posted the best performance on this corridor at 82% on-time, while Dec 2025 came in at 48% on-time — a 34-point gap between best and worst recent month. For travelers evaluating the ORD to ASE route, the combination of a 70.7% on-time rate, 94.9-minute average delay, 2.4% recent cancellation rate, and 1 available carrier is the concrete summary of what BTS data shows about reliability on this pairing.