Columbus to Denver

What the Data Says About CMH to DEN

The Columbus to Denver corridor (CMH → DEN) covers roughly 1,154 miles and is served by 20 carriers, based on Bureau of Transportation Statistics reporting. Across 9,464 flights in the dataset, this route posts a 80.7% on-time rate with an average delay of 65.9 minutes when flights run late. Over the most recent 24 months of BTS data, 3,545 flights were recorded on this pairing — 16 cancelled (0.5%) and 15 diverted (0.4%). Those baseline metrics tell you what to expect before you book.

Having 20 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 9,464 total flights analyzed, the 80.7% on-time figure is statistically meaningful rather than a small-sample fluke. The 65.9-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, Sep 2024 posted the best performance on this corridor at 92% on-time, while Dec 2025 came in at 63% on-time — a 29-point gap between best and worst recent month. For travelers evaluating the CMH to DEN route, the combination of a 80.7% on-time rate, 65.9-minute average delay, 0.5% recent cancellation rate, and 20 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.