Dallas to Denver

What the Data Says About DAL to DEN

The Dallas to Denver corridor (DAL → DEN) covers roughly 651 miles and is served by 1 carrier, based on Bureau of Transportation Statistics reporting. Across 17,984 flights in the dataset, this route posts a 76.7% on-time rate with an average delay of 58.1 minutes when flights run late. Over the most recent 24 months of BTS data, 6,325 flights were recorded on this pairing — 91 cancelled (1.4%) and 17 diverted (0.3%). 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 17,984 total flights analyzed, the 76.7% on-time figure is statistically meaningful rather than a small-sample fluke. The 58.1-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, Jan 2025 posted the best performance on this corridor at 89% on-time, while Jun 2025 came in at 59% on-time — a 30-point gap between best and worst recent month. For travelers evaluating the DAL to DEN route, the combination of a 76.7% on-time rate, 58.1-minute average delay, 1.4% recent cancellation rate, and 1 available carrier is the concrete summary of what BTS data shows about reliability on this pairing.