Aspen to Denver

What the Data Says About ASE to DEN

The Aspen to Denver corridor (ASE → DEN) covers roughly 125 miles and is served by 1 carrier, based on Bureau of Transportation Statistics reporting. Across 14,206 flights in the dataset, this route posts a 74.8% on-time rate with an average delay of 88.9 minutes when flights run late. Over the most recent 24 months of BTS data, 5,593 flights were recorded on this pairing — 303 cancelled (5.4%) and 6 diverted (0.1%). 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 14,206 total flights analyzed, the 74.8% on-time figure is statistically meaningful rather than a small-sample fluke. The 88.9-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, Nov 2025 posted the best performance on this corridor at 86% on-time, while Jun 2025 came in at 52% on-time — a 34-point gap between best and worst recent month. For travelers evaluating the ASE to DEN route, the combination of a 74.8% on-time rate, 88.9-minute average delay, 5.4% recent cancellation rate, and 1 available carrier is the concrete summary of what BTS data shows about reliability on this pairing.